Publications

Journal Articles

  1. Smith, A.; Bhat, V.; Ai, Q.; Risko, C. Challenges in Information-Mining the Materials Literature: A Case Study and Perspective. Chemistry of Materials 2022, 34 (11), 4821–4827. Link
  2. Nor, N. U. M.; Mazalan, E.; Risko, C.; Crocker, M.; Amin, N. A. S. Unveiling the Structural, Electronic, and Optical Effects of Carbon-Doping on Multi-Layer Anatase TiO2 (1 0 1) and the Impact on Photocatalysis. Applied Surface Science 2022, 586, 152641. Link
  3. Pokuri, B. S. S.; Ryno, S. M.; Noruzi, R.; Risko, C.; Ganapathysubramanian, B. Computational Characterization of Charge Transport Resiliency in Molecular Solids. Molecular Systems Design & Engineering 2022, 7 (6), 651–660. Link
  4. Callaway, C. P.; Liu, A. L.; Venkatesh, R.; Zheng, Y.; Lee, M.; Meredith, J. C.; Grover, M.; Risko, C.; Reichmanis, E. The Solution Is the Solution: Data-Driven Elucidation of Solution-to-Device Feature Transfer for π-Conjugated Polymer Semiconductors. ACS Applied Materials & Interfaces 2022, 14 (3), 3613–3620. Link
  5. Karunasena, C.; Li, S.; Heifner, M. C.; Ryno, S. M.; Risko, C. Reconsidering the Roles of Noncovalent Intramolecular “Locks” in π-Conjugated Molecules. Chemistry of Materials 2021, 33 (23), 9139–9151. Link
  6. Ryno, S. M.; Noruzi, R.; Karunasena, C.; Pokuri, B. S. S.; Li, S.; Ganapathysubramanian, B.; Risko, C. Following the Crystal Growth of Anthradithiophenes through Atomistic Molecular Dynamics Simulations and Graph Characterization. Molecular Systems Design & Engineering 2022, 7 (2), 112–122. Link
  7. Ai, Q.; Smith, T.; Liyanage, A. D. T.; Mazza, S. M.; Parkin, S. R.; Anthony, J. E.; Risko, C. Nanoribbons or Weakly Connected Acenes? The Influence of Pyrene Insertion on Linearly Extended Ring Systems. Journal of Materials Chemistry C 2021, 9 (47), 16929–16934. Link
  8. Pandeya, A.; Yang, L.; Alegun, O.; Karunasena, C.; Risko, C.; Li, Z.; Wei, Y. Biotinylation as a Tool to Enhance the Uptake of Small Molecules in Gram-Negative Bacteria. PLOS ONE 2021, 16 (11), e0260023. Link
  9. Koenig, J. D. B.; Dubrawski, Z. S.; Rao, K. R.; Willkomm, J.; Gelfand, B. S.; Risko, C.; Piers, W. E.; Welch, G. C. Lowering Electrocatalytic CO2 Reduction Overpotential Using N-Annulated Perylene Diimide Rhenium Bipyridine Dyads with Variable Tether Length. Journal of the American Chemical Society 2021, 143 (40), 16849–16864. Link
  10. Callaway, C. P.; Bombile, J. H.; Mask, W.; Ryno, S. M.; Risko, C. Thermomechanical Enhancement of <scp>DPP‐4T</Scp> through Purposeful <scp>π‐conjugation</Scp> Disruption. Journal of Polymer Science 2021, 60 (3), 559–568. Link
  11. Chaudhry, S.; Wu, Y.; Cao, Z.; Li, S.; Canada, J. L.; Gu, X.; Risko, C.; Mei, J. Evolution of Chain Dynamics and Oxidation States with Increasing Chain Length for a Donor–Acceptor-Conjugated Oligomer Series. Macromolecules 2021, 54 (17), 8207–8219. Link
  12. Longhi, E.; Risko, C.; Bacsa, J.; Khrustalev, V.; Rigin, S.; Moudgil, K.; Timofeeva, T. V.; Marder, S. R.; Barlow, S. Synthesis, Structures, and Reactivity of Isomers of [RuCp*(1,4-(Me2N)2C6H4)]2. Dalton Transactions 2021, 50 (37), 13020–13030. Link
  13. Roberts, J.; Bursten, J. R. S.; Risko, C. Genetic Algorithms and Machine Learning for Predicting Surface Composition, Structure, and Chemistry: A Historical Perspective and Assessment. Chemistry of Materials 2021, 33 (17), 6589–6615. Link
  14. Thorley, K. J.; Benford, M.; Song, Y.; Parkin, S. R.; Risko, C.; Anthony, J. E. What Is Special about Silicon in Functionalised Organic Semiconductors? Materials Advances 2021, 2 (16), 5415–5421. Link
  15. Jarolimek, K.; Risko, C. Modification of the LiFePO4 (010) Surface Due to Exposure to Atmospheric Gases. ACS Applied Materials & Interfaces 2021, 13 (24), 29034–29040. Link
  16. Ai, Q.; Bhat, V.; Ryno, S. M.; Jarolimek, K.; Sornberger, P.; Smith, A.; Haley, M. M.; Anthony, J. E.; Risko, C. OCELOT: An Infrastructure for Data-Driven Research to Discover and Design Crystalline Organic Semiconductors. The Journal of Chemical Physics 2021, 154 (17), 174705. Link
  17. Iqbal, H. F.; Ai, Q.; Thorley, K. J.; Chen, H.; McCulloch, I.; Risko, C.; Anthony, J. E.; Jurchescu, O. D. Suppressing Bias Stress Degradation in High Performance Solution Processed Organic Transistors Operating in Air. Nature Communications 2021, 12 . Link
  18. Jhulki, S.; Un, H.-I.; Ding, Y.-F.; Risko, C.; Mohapatra, S. K.; Pei, J.; Barlow, S.; Marder, S. R. Reactivity of an Air-Stable Dihydrobenzoimidazole n-Dopant with Organic Semiconductor Molecules. Chem 2021, 7 (4), 1050–1065. Link
  19. Ghasemi, M.; Balar, N.; Peng, Z.; Hu, H.; Qin, Y.; Kim, T.; Rech, J. J.; Bidwell, M.; Mask, W.; McCulloch, I.; You, W.; Amassian, A.; Risko, C.; O’Connor, B. T.; Ade, H. A Molecular Interaction–Diffusion Framework for Predicting Organic Solar Cell Stability. Nature Materials 2021, 20 (4), 525–532. Link
  20. Elliott, C. F.; Fraser, K. E.; Odom, S. A.; Risko, C. Steric Manipulation as a Mechanism for Tuning the Reduction and Oxidation Potentials of Phenothiazines. The Journal of Physical Chemistry A 2021, 125 , 272–278. Link
  21. Liang, Z.; Choi, H. H.; Luo, X.; Liu, T.; Abtahi, A.; Ramasamy, U. S.; Hitron, J. A.; Baustert, K. N.; Hempel, J. L.; Boehm, A. M.; Ansary, A.; Strachan, D. R.; Mei, J.; Risko, C.; Podzorov, V.; Graham, K. R. N-Type Charge Transport in Heavily p-Doped Polymers. Nature Materials 2021, 20 (4), 518–524. Link
  22. Harding, C. R.; Cann, J.; Laventure, A.; Sadeghianlemraski, M.; Abd-Ellah, M.; Rao, K. R.; Gelfand, B. S.; Aziz, H.; Kaake, L.; Risko, C.; Welch, G. C. Acid Dyeing for Green Solvent Processing of Solvent Resistant Semiconducting Organic Thin Films. Materials Horizons 2020, 7 (11), 2959–2969. Link
  23. Roberts, J.; Song, Y.; Crocker, M.; Risko, C. A Genetic Algorithmic Approach to Determine the Structure of Li–Al Layered Double Hydroxides. Journal of Chemical Information and Modeling 2020, 60 (10), 4845–4855. Link
  24. Onyango, E. O.; Mannes, P. Z.; Pletnev, A.; Granger, D. B.; Ai, Q.; Risko, C.; Anthony, J. E.; Gribble, G. W. Synthesis and Electronic Properties of a Linearly Fused Anthracene Dimer. Tetrahedron Letters 2020, 61 (31), 152182. Link
  25. Li, S.; Pokuri, B. S. S.; Ryno, S. M.; Nkansah, A.; De’Vine, C.; Ganapathysubramanian, B.; Risko, C. Determination of the Free Energies of Mixing of Organic Solutions through a Combined Molecular Dynamics and Bayesian Statistics Approach. Journal of Chemical Information and Modeling 2020, 60 (3), 1424–1431. Link
  26. Gao, G.; Chen, M.; Roberts, J.; Feng, M.; Xiao, C.; Zhang, G.; Parkin, S.; Risko, C.; Zhang, L. Rational Functionalization of a C70 Buckybowl To Enable a C70:Buckybowl Cocrystal for Organic Semiconductor Applications. Journal of the American Chemical Society 2020, 142 (5), 2460–2470. Link
  27. Wanninayake, N.; Ai, Q.; Zhou, R.; Hoque, M. A.; Herrell, S.; Guzman, M. I.; Risko, C.; Kim, D. Y. Understanding the Effect of Host Structure of Nitrogen Doped Ultrananocrystalline Diamond Electrode on Electrochemical Carbon Dioxide Reduction. Carbon 2020, 157, 408–419. Link
  28. Andrés Castán, J. M.; Abad Galán, L.; Li, S.; Dalinot, C.; Simón Marqués, P.; Allain, M.; Risko, C.; Monnereau, C.; Maury, O.; Blanchard, P.; Cabanetos, C. Nitration of Benzothioxanthene: Towards a New Class of Dyes with Versatile Photophysical Properties. New Journal of Chemistry 2020, 44 (3), 900–905. Link
  29. Purdum, G. E.; Chen, X.; Telesz, N.; Ryno, S. M.; Sengar, N.; Gessner, T.; Risko, C.; Clancy, P.; Weitz, R. T.; Loo, Y.-L. Solvent–Molecule Interactions Govern Crystal-Habit Selection in Naphthalene Tetracarboxylic Diimides. Chemistry of Materials 2019, 31 (23), 9691–9698. Link
  30. Petty, A. J.; Ai, Q.; Sorli, J. C.; Haneef, H. F.; Purdum, G. E.; Boehm, A.; Granger, D. B.; Gu, K.; Rubinger, C. P. L.; Parkin, S. R.; Graham, K. R.; Jurchescu, O. D.; Loo, Y.-L.; Risko, C.; Anthony, J. E. Computationally Aided Design of a High-Performance Organic Semiconductor: The Development of a Universal Crystal Engineering Core. Chemical Science 2019, 10 (45), 10543–10549. Link
  31. Zeidell, A. M.; Jennings, L.; Frederickson, C. K.; Ai, Q.; Dressler, J. J.; Zakharov, L. N.; Risko, C.; Haley, M. M.; Jurchescu, O. D. Organic Semiconductors Derived from Dinaphtho-Fused s-Indacenes: How Molecular Structure and Film Morphology Influence Thin-Film Transistor Performance. Chemistry of Materials 2019, 31 (17), 6962–6970. Link
  32. Risko, C.; Reichmanis, E.; Lazzaroni, R.; Shuai, Z.; Toro, C.; Buriak, J. M. Festschrift in Honor of Prof. Jean-Luc Brédas on His 65th Birthday. Chemistry of Materials 2019, 31 (17), 6307–6308. Link
  33. Burnett, E. K.; Ai, Q.; Cherniawski, B. P.; Parkin, S. R.; Risko, C.; Briseno, A. L. Even–Odd Alkyl Chain-Length Alternation Regulates Oligothiophene Crystal Structure. Chemistry of Materials 2019, 31 (17), 6900–6907. Link
  34. Sorli, J. C.; Ai, Q.; Granger, D. B.; Gu, K.; Parkin, S.; Jarolimek, K.; Telesz, N.; Anthony, J. E.; Risko, C.; Loo, Y.-L. Impact of Atomistic Substitution on Thin-Film Structure and Charge Transport in a Germanyl-Ethynyl Functionalized Pentacene. Chemistry of Materials 2019, 31 (17), 6615–6623. Link
  35. Kharandiuk, T.; Hussien, E. J.; Cameron, J.; Petrina, R.; Findlay, N. J.; Naumov, R.; Klooster, W. T.; Coles, S. J.; Ai, Q.; Goodlett, S.; Risko, C.; Skabara, P. J. Noncovalent Close Contacts in Fluorinated Thiophene–Phenylene–Thiophene Conjugated Units: Understanding the Nature and Dominance of O···H versus S···F and O···F Interactions with Respect to the Control of Polymer Conformation. Chemistry of Materials 2019, 31 (17), 7070–7079. Link
  36. Fallon, K. J.; Budden, P.; Salvadori, E.; Ganose, A. M.; Savory, C. N.; Eyre, L.; Dowland, S.; Ai, Q.; Goodlett, S.; Risko, C.; Scanlon, D. O.; Kay, C. W. M.; Rao, A.; Friend, R. H.; Musser, A. J.; Bronstein, H. Exploiting Excited-State Aromaticity To Design Highly Stable Singlet Fission Materials. Journal of the American Chemical Society 2019, 141 (35), 13867–13876. Link
  37. Widger, L. R.; Sarma, M.; Kelsey, R. A.; Risko, C.; Lippert, C. A.; Parkin, S. R.; Liu, K. Enhancing CO2 Absorption for Post-Combustion Carbon Capture via Zinc-Based Biomimetic Catalysts in Industrially Relevant Amine Solutions. International Journal of Greenhouse Gas Control 2019, 85, 156–165. Link
  38. Lv, L.; Roberts, J.; Xiao, C.; Jia, Z.; Jiang, W.; Zhang, G.; Risko, C.; Zhang, L. Triperyleno[3,3,3]Propellane Triimides: Achieving a New Generation of Quasi-D3h Symmetric Nanostructures in Organic Electronics. Chemical Science 2019, 10 (19), 4951–4958. Link
  39. Cheema, H.; Baumann, A.; Loya, E. K.; Brogdon, P.; McNamara, L. E.; Carpenter, C. A.; Hammer, N. I.; Mathew, S.; Risko, C.; Delcamp, J. H. Near-Infrared-Absorbing Indolizine-Porphyrin Push–Pull Dye for Dye-Sensitized Solar Cells. ACS Applied Materials & Interfaces 2019, 11 (18), 16474–16489. Link
  40. Kaafarani, B. R.; El-Assaad, T. H.; Smith, W. A.; Ryno, S. M.; Hermerschmidt, F.; Lyons, J.; Patra, D.; Wex, B.; List-Kratochvil, E. J. W.; Risko, C.; Barlow, S.; Marder, S. R. Bis(Tercarbazole) Pyrene and Tetrahydropyrene Derivatives: Photophysical and Electrochemical Properties, Theoretical Modeling, and OLEDs. Journal of Materials Chemistry C 2019, 7 (17), 5009–5018. Link
  41. Chaudhry, S.; Ryno, S. M.; Zeller, M.; McMillin, D. R.; Risko, C.; Mei, J. Oxidation Pathways Involving a Sulfide-Endcapped Donor–Acceptor–Donor π-Conjugated Molecule and Antimony(V) Chloride. The Journal of Physical Chemistry B 2019, 123 (17), 3866–3874. Link
  42. Ryno, S. M.; Risko, C. Deconstructing the Behavior of Donor–Acceptor Copolymers in Solution & the Melt: The Case of PTB7. Physical Chemistry Chemical Physics 2019, 21 (15), 7802–7813. Link
  43. Zhang, S.; Moudgil, K.; Jucov, E.; Risko, C.; Timofeeva, T. V.; Marder, S. R.; Barlow, S. Organometallic Hydride-Transfer Agents as Reductants for Organic Semiconductor Molecules. Inorganica Chimica Acta 2019, 489, 67–77. Link
  44. Li, H.; Hong, M.; Scarpaci, A.; He, X.; Risko, C.; Sears, J. S.; Barlow, S.; Winget, P.; Marder, S. R.; Kim, D.; Brédas, J.-L. Chemical Stabilities of the Lowest Triplet State in Aryl Sulfones and Aryl Phosphine Oxides Relevant to OLED Applications. Chemistry of Materials 2019, 31 (5), 1507–1519. Link
  45. Li, S.; Ryno, S. M.; Risko, C. Exploring Thermal Transitions in Anthradithiophene-Based Organic Semiconductors to Reveal Structure-Packing Relationships. Journal of Materials Chemistry C 2018, 6 (40), 10924–10934. Link
  46. Payne, A.-J.; Rice, N. A.; McAfee, S. M.; Li, S.; Josse, P.; Cabanetos, C.; Risko, C.; Lessard, B. H.; Welch, G. C. Donor or Acceptor? How Selection of the Rylene Imide End Cap Impacts the Polarity of π-Conjugated Molecules for Organic Electronics. ACS Applied Energy Materials 2018, 1 (9), 4906–4916. Link
  47. Yarnell, J. E.; Davydenko, I.; Dorovatovskii, P. V.; Khrustalev, V. N.; Timofeeva, T. V.; Castellano, F. N.; Marder, S. R.; Risko, C.; Barlow, S. Positional Effects from σ-Bonded Platinum(II) on Intersystem Crossing Rates in Perylenediimide Complexes: Synthesis, Structures, and Photophysical Properties. The Journal of Physical Chemistry C 2018, 122 (25), 13848–13862. Link
  48. Purdum, G. E.; Telesz, N. G.; Jarolimek, K.; Ryno, S. M.; Gessner, T.; Davy, N. C.; Petty, A. J.; Zhen, Y.; Shu, Y.; Facchetti, A.; Collis, G. E.; Hu, W.; Wu, C.; Anthony, J. E.; Weitz, R. T.; Risko, C.; Loo, Y.-L. Presence of Short Intermolecular Contacts Screens for Kinetic Stability in Packing Polymorphs. Journal of the American Chemical Society 2018, 140 (24), 7519–7525. Link
  49. Sini, G.; Schubert, M.; Risko, C.; Roland, S.; Lee, O. P.; Chen, Z.; Richter, T. V.; Dolfen, D.; Coropceanu, V.; Ludwigs, S.; Scherf, U.; Facchetti, A.; Fréchet, J. M. J.; Neher, D. On the Molecular Origin of Charge Separation at the Donor–Acceptor Interface. Advanced Energy Materials 2018, 8 (12), 1702232. Link
  50. Lopes, T. O.; Machado, D. F. S.; Risko, C.; Brédas, J.-L.; de Oliveira, H. C. B. Bond Ellipticity Alternation: An Accurate Descriptor of the Nonlinear Optical Properties of π-Conjugated Chromophores. The Journal of Physical Chemistry Letters 2018, 9 (6), 1377–1383. Link
  51. Abtahi, A.; Mazza, S. M.; Ryno, S. M.; Loya, E. K.; Li, R.; Parkin, S. R.; Risko, C.; Anthony, J. E.; Graham, K. R. Effect of Halogenation on the Energetics of Pure and Mixed Phases in Model Organic Semiconductors Composed of Anthradithiophene Derivatives and C60. The Journal of Physical Chemistry C 2018, 122 (9), 4757–4767. Link
  52. Ai, Q.; Jarolimek, K.; Mazza, S.; Anthony, J. E.; Risko, C. Delimited Polyacenes: Edge Topology as a Tool To Modulate Carbon Nanoribbon Structure, Conjugation, and Mobility. Chemistry of Materials 2018, 30 (3), 947–957. Link
  53. Josse, P.; Li, S.; Dayneko, S.; Joly, D.; Labrunie, A.; Dabos-Seignon, S.; Allain, M.; Siegler, B.; Demadrille, R.; Welch, G. C.; Risko, C.; Blanchard, P.; Cabanetos, C. Bromination of the Benzothioxanthene Bloc: Toward New π-Conjugated Systems for Organic Electronic Applications. Journal of Materials Chemistry C 2018, 6 (4), 761–766. Link
  54. McDowell, C.; Narayanaswamy, K.; Yadagiri, B.; Gayathri, T.; Seifrid, M.; Datt, R.; Ryno, S. M.; Heifner, M. C.; Gupta, V.; Risko, C.; Singh, S. P.; Bazan, G. C. Impact of Rotamer Diversity on the Self-Assembly of Nearly Isostructural Molecular Semiconductors. Journal of Materials Chemistry A 2018, 6 (2), 383–394. Link
  55. Getmanenko, Y. A.; Mullins, C. S.; Nesterov, V. N.; Lake, S.; Risko, C.; Johnston-Halperin, E. Magnetic Ordering in a Vanadium-Organic Coordination Polymer Using a Pyrrolo[2,3-d:5,4-d′]Bis(Thiazole)-Based Ligand. RSC Advances 2018, 8 (63), 36223–36232. Link
  56. Kowalski, J. A.; Casselman, M. D.; Kaur, A. P.; Milshtein, J. D.; Elliott, C. F.; Modekrutti, S.; Attanayake, N. H.; Zhang, N.; Parkin, S. R.; Risko, C.; Brushett, F. R.; Odom, S. A. A Stable Two-Electron-Donating Phenothiazine for Application in Nonaqueous Redox Flow Batteries. Journal of Materials Chemistry A 2017, 5 (46), 24371–24379. Link
  57. Payne, A.-J.; Li, S.; Dayneko, S. V.; Risko, C.; Welch, G. C. Correction: An Unsymmetrical Non-Fullerene Acceptor: Synthesis via Direct Heteroarylation, Self-Assembly, and Utility as a Low Energy Absorber in Organic Photovoltaic Cells. Chemical Communications 2017, 53 (76), 10608–10608. Link
  58. Ai, Q.; Getmanenko, Y. A.; Jarolimek, K.; Castañeda, R.; Timofeeva, T. V.; Risko, C. Unusual Electronic Structure of the Donor–Acceptor Cocrystal Formed by Dithieno[3,2-a:2′,3′-c]Phenazine and 7,7,8,8-Tetracyanoquinodimethane. The Journal of Physical Chemistry Letters 2017, 8 (18), 4510–4515. Link
  59. Payne, A.-J.; Li, S.; Dayneko, S. V.; Risko, C.; Welch, G. C. An Unsymmetrical Non-Fullerene Acceptor: Synthesis via Direct Heteroarylation, Self-Assembly, and Utility as a Low Energy Absorber in Organic Photovoltaic Cells. Chemical Communications 2017, 53 (73), 10168–10171. Link
  60. Casselman, M. D.; Elliott, C. F.; Modekrutti, S.; Zhang, P. L.; Parkin, S. R.; Risko, C.; Odom, S. A. Beyond the Hammett Effect: Using Strain to Alter the Landscape of Electrochemical Potentials. ChemPhysChem 2017, 18 (16), 2142–2146. Link
  61. Mei, Y.; Diemer, P. J.; Niazi, M. R.; Hallani, R. K.; Jarolimek, K.; Day, C. S.; Risko, C.; Anthony, J. E.; Amassian, A.; Jurchescu, O. D. Crossover from Band-like to Thermally Activated Charge Transport in Organic Transistors Due to Strain-Induced Traps. Proceedings of the National Academy of Sciences 2017, 114 (33). Link
  62. Shiring, S. B.; Gieseking, R. L.; Risko, C.; Brédas, J.-L. Assessment of Front-Substituted Zwitterionic Cyanine Polymethines for All-Optical Switching Applications. The Journal of Physical Chemistry C 2017, 121 (26), 14166–14175. Link
  63. Thorley, K. J.; Finn, T. W.; Jarolimek, K.; Anthony, J. E.; Risko, C. Theory-Driven Insight into the Crystal Packing of Trialkylsilylethynyl Pentacenes. Chemistry of Materials 2016, 29 (6), 2502–2512. Link
  64. Ravva, M. K.; Risko, C.; Brédas, J.-L. Noncovalent Interactions in Organic Electronic Materials. Non-Covalent Interactions in Quantum Chemistry and Physics 2017, 277–302. Link
  65. Hyla, A. S.; Winget, P.; Li, H.; Risko, C.; Brédas, J.-L. Work Function Reduction by a Redox-Active Organometallic Sandwich Complex. Organic Electronics 2016, 37, 263–270. Link
  66. Tummala, N. R.; Elroby, S. A.; Aziz, S. G.; Risko, C.; Coropceanu, V.; Brédas, J.-L. Packing and Disorder in Substituted Fullerenes. The Journal of Physical Chemistry C 2016, 120 (31), 17242–17250. Link
  67. Conboy, G.; Spencer, H. J.; Angioni, E.; Kanibolotsky, A. L.; Findlay, N. J.; Coles, S. J.; Wilson, C.; Pitak, M. B.; Risko, C.; Coropceanu, V.; Brédas, J.-L.; Skabara, P. J. To Bend or Not to Bend – Are Heteroatom Interactions within Conjugated Molecules Effective in Dictating Conformation and Planarity? Materials Horizons 2016, 3 (4), 333–339. Link
  68. Ryno, S. M.; Fu, Y.-T.; Risko, C.; Brédas, J.-L. Polarization Energies at Organic–Organic Interfaces: Impact on the Charge Separation Barrier at Donor–Acceptor Interfaces in Organic Solar Cells. ACS Applied Materials & Interfaces 2016, 8 (24), 15524–15534. Link
  69. Ryno, S. M.; Risko, C.; Brédas, J.-L. Noncovalent Interactions and Impact of Charge Penetration Effects in Linear Oligoacene Dimers and Single Crystals. Chemistry of Materials 2016, 28 (11), 3990–4000. Link
  70. Ryno, S. M.; Risko, C.; Brédas, J.-L. Impact of Molecular Orientation and Packing Density on Electronic Polarization in the Bulk and at Surfaces of Organic Semiconductors. ACS Applied Materials & Interfaces 2016, 8 (22), 14053–14062. Link
  71. Castañeda, R.; Fonari, M. S.; Risko, C.; Getmanenko, Y. A.; Timofeeva, T. V. Parallel and Perpendicular Packing in Mixed-Stack Cocrystals of Trimeric Perfluoro-Ortho-Phenylene Mercury and Benzo[1,2-b:6,5-b′]Dithiophene-4,5-Dione Derivatives. Crystal Growth & Design 2016, 16 (4), 2190–2200. Link
  72. Sweetnam, S.; Vandewal, K.; Cho, E.; Risko, C.; Coropceanu, V.; Salleo, A.; Brédas, J.-L.; McGehee, M. D. Characterizing the Polymer:Fullerene Intermolecular Interactions. Chemistry of Materials 2016, 28 (5), 1446–1452. Link
  73. Kaafarani, B. R.; Risko, C.; El-Assaad, T. H.; El-Ballouli, A. O.; Marder, S. R.; Barlow, S. Mixed-Valence Cations of Di(Carbazol-9-Yl) Biphenyl, Tetrahydropyrene, and Pyrene Derivatives. The Journal of Physical Chemistry C 2016, 120 (6), 3156–3166. Link
  74. Kastinen, T.; Niskanen, M.; Risko, C.; Cramariuc, O.; Hukka, T. I. Intrinsic Properties of Two Benzodithiophene-Based Donor–Acceptor Copolymers Used in Organic Solar Cells: A Quantum-Chemical Approach. The Journal of Physical Chemistry A 2016, 120 (7), 1051–1064. Link
  75. Wu, Y.; Chew, A. R.; Rojas, G. A.; Sini, G.; Haugstad, G.; Belianinov, A.; Kalinin, S. V.; Li, H.; Risko, C.; Brédas, J.-L.; Salleo, A.; Frisbie, C. D. Strain Effects on the Work Function of an Organic Semiconductor. Nature Communications 2016, 7 . Link
  76. Sutton, C.; Risko, C.; Brédas, J.-L. Noncovalent Intermolecular Interactions in Organic Electronic Materials: Implications for the Molecular Packing vs Electronic Properties of Acenes. Chemistry of Materials 2015, 28 , 3–16. Link
  77. Marshall, J. L.; Uchida, K.; Frederickson, C. K.; Schütt, C.; Zeidell, A. M.; Goetz, K. P.; Finn, T. W.; Jarolimek, K.; Zakharov, L. N.; Risko, C.; Herges, R.; Jurchescu, O. D.; Haley, M. M. Indacenodibenzothiophenes: Synthesis, Optoelectronic Properties and Materials Applications of Molecules with Strong Antiaromatic Character. Chemical Science 2016, 7 (8), 5547–5558. Link
  78. Milshtein, J. D.; Kaur, A. P.; Casselman, M. D.; Kowalski, J. A.; Modekrutti, S.; Zhang, P. L.; Harsha Attanayake, N.; Elliott, C. F.; Parkin, S. R.; Risko, C.; Brushett, F. R.; Odom, S. A. High Current Density, Long Duration Cycling of Soluble Organic Active Species for Non-Aqueous Redox Flow Batteries. Energy & Environmental Science 2016, 9 (11), 3531–3543. Link
  79. Thorley, K. J.; Risko, C. Mapping the Configuration Dependence of Electronic Coupling in Organic Semiconductors. Journal of Materials Chemistry C 2016, 4 (17), 3825–3832. Link
  80. Thorley, K. J.; Risko, C. On the Impact of Isomer Structure and Packing Disorder in Thienoacene Organic Semiconductors. Journal of Materials Chemistry C 2016, 4 (18), 4040–4048. Link
  81. Kaur, A. P.; Casselman, M. D.; Elliott, C. F.; Parkin, S. R.; Risko, C.; Odom, S. A. Overcharge Protection of Lithium-Ion Batteries above 4 V with a Perfluorinated Phenothiazine Derivative. Journal of Materials Chemistry A 2016, 4 (15), 5410–5414. Link
  82. Tummala, N. R.; Sutton, C.; Aziz, S. G.; Toney, M. F.; Risko, C.; Bredas, J.-L. Effect of Solvent Additives on the Solution Aggregation of Phenyl-C61–Butyl Acid Methyl Ester (PCBM). Chemistry of Materials 2015, 27 (24), 8261–8272. Link
  83. Do, K.; Risko, C.; Anthony, J. E.; Amassian, A.; Brédas, J.-L. Dynamics, Miscibility, and Morphology in Polymer:Molecule Blends: The Impact of Chemical Functionality. Chemistry of Materials 2015, 27 (22), 7643–7651. Link
  84. Moudgil, K.; Mann, M. A.; Risko, C.; Bottomley, L. A.; Marder, S. R.; Barlow, S. Dimers of Nineteen-Electron Sandwich Compounds: An Electrochemical Study of the Kinetics of Their Formation. Organometallics 2015, 34 (15), 3706–3712. Link
  85. Gieseking, R. L.; Ensley, T. R.; Hu, H.; Hagan, D. J.; Risko, C.; Van Stryland, E. W.; Brédas, J.-L. Nonlinear Optical Properties of X(C6H5)4 (X = B–, C, N+, P+): A New Class of Molecules with a Negative Third-Order Polarizability. Journal of the American Chemical Society 2015, 137 (30), 9635–9642. Link
  86. Zhang, S.; Naab, B. D.; Jucov, E. V.; Parkin, S.; Evans, E. G. B.; Millhauser, G. L.; Timofeeva, T. V.; Risko, C.; Brédas, J.-L.; Bao, Z.; Barlow, S.; Marder, S. R. N-Dopants Based on Dimers of Benzimidazoline Radicals: Structures and Mechanism of Redox Reactions. Chemistry - A European Journal 2015, 21 (30), 10878–10885. Link
  87. Sutton, C.; Marshall, M. S.; Sherrill, C. D.; Risko, C.; Brédas, J.-L. Rubrene: The Interplay between Intramolecular and Intermolecular Interactions Determines the Planarization of Its Tetracene Core in the Solid State. Journal of the American Chemical Society 2015, 137 (27), 8775–8782. Link
  88. Tummala, N. R.; Risko, C.; Bruner, C.; Dauskardt, R. H.; Brédas, J.-L. Entanglements in P3HT and Their Influence on Thin-Film Mechanical Properties: Insights from Molecular Dynamics Simulations. Journal of Polymer Science Part B: Polymer Physics 2015, 53 (13), 934–942. Link
  89. Gieseking, R. L.; Risko, C.; Brédas, J.-L. Distinguishing the Effects of Bond-Length Alternation versus Bond-Order Alternation on the Nonlinear Optical Properties of π-Conjugated Chromophores. The Journal of Physical Chemistry Letters 2015, 6 (12), 2158–2162. Link
  90. Tummala, N. R.; Bruner, C.; Risko, C.; Brédas, J.-L.; Dauskardt, R. H. Molecular-Scale Understanding of Cohesion and Fracture in P3HT:Fullerene Blends. ACS Applied Materials & Interfaces 2015, 7 (18), 9957–9964. Link
  91. Narayana, K. A.; Casselman, M. D.; Elliott, C. F.; Ergun, S.; Parkin, S. R.; Risko, C.; Odom, S. A. N-Substituted Phenothiazine Derivatives: How the Stability of the Neutral and Radical Cation Forms Affects Overcharge Performance in Lithium-Ion Batteries. ChemPhysChem 2014, 16 (6), 1179–1189. Link
  92. Casselman, M. D.; Kaur, A. P.; Narayana, K. A.; Elliott, C. F.; Risko, C.; Odom, S. A. The Fate of Phenothiazine-Based Redox Shuttles in Lithium-Ion Batteries. Physical Chemistry Chemical Physics 2015, 17 (10), 6905–6912. Link
  93. Parker, T. C.; Patel, D. G. (Dan); Moudgil, K.; Barlow, S.; Risko, C.; Brédas, J.-L.; Reynolds, J. R.; Marder, S. R. Heteroannulated Acceptors Based on Benzothiadiazole. Materials Horizons 2015, 2 , 22–36. Link
  94. Gieseking, R. L.; Mukhopadhyay, S.; Risko, C.; Marder, S. R.; Brédas, J.-L. Effect of Bulky Substituents on Thiopyrylium Polymethine Aggregation in the Solid State: A Theoretical Evaluation of the Implications for All-Optical Switching Applications. Chemistry of Materials 2014, 26 (22), 6439–6447. Link
  95. Mohapatra, S. K.; Fonari, A.; Risko, C.; Yesudas, K.; Moudgil, K.; Delcamp, J. H.; Timofeeva, T. V.; Brédas, J.-L.; Marder, S. R.; Barlow, S. Dimers of Nineteen-Electron Sandwich Compounds: Crystal and Electronic Structures, and Comparison of Reducing Strengths. Chemistry - A European Journal 2014, 20 (47), 15385–15394. Link
  96. Lima, I. T.; Risko, C.; Aziz, S. G.; da Silva Filho, D. A.; Brédas, J.-L. Interplay of Alternative Conjugated Pathways and Steric Interactions on the Electronic and Optical Properties of Donor–Acceptor Conjugated Polymers. J. Mater. Chem. C 2014, 2 (42), 8873–8879. Link
  97. Barlow, S.; Brédas, J.-L.; Getmanenko, Y. A.; Gieseking, R. L.; Hales, J. M.; Kim, H.; Marder, S. R.; Perry, J. W.; Risko, C.; Zhang, Y. Polymethine Materials with Solid-State Third-Order Optical Susceptibilities Suitable for All-Optical Signal-Processing Applications. Mater. Horiz. 2014, 1 (6), 577–581. Link
  98. Gieseking, R. L.; Mukhopadhyay, S.; Shiring, S. B.; Risko, C.; Brédas, J.-L. Impact of Bulk Aggregation on the Electronic Structure of Streptocyanines: Implications for the Solid-State Nonlinear Optical Properties and All-Optical Switching Applications. The Journal of Physical Chemistry C 2014, 118 (41), 23575–23585. Link
  99. Williams, M.; Tummala, N. R.; Aziz, S. G.; Risko, C.; Brédas, J.-L. Influence of Molecular Shape on Solid-State Packing in Disordered PC61BM and PC71BM Fullerenes. The Journal of Physical Chemistry Letters 2014, 5 (19), 3427–3433. Link
  100. Fu, Y.-T.; Yi, Y.; Coropceanu, V.; Risko, C.; Aziz, S. G.; Brédas, J.-L. Theoretical Description of the Geometric and Electronic Structures of Organic-Organic Interfaces in Organic Solar Cells: A Brief Review. Science China Chemistry 2014, 57 (10), 1330–1339. Link
  101. Fu, Y.-T.; da Silva Filho, D. A.; Sini, G.; Asiri, A. M.; Aziz, S. G.; Risko, C.; Brédas, J.-L. Structure and Disorder in Squaraine-C60Organic Solar Cells: A Theoretical Description of Molecular Packing and Electronic Coupling at the Donor-Acceptor Interface. Advanced Functional Materials 2014, 24 (24), 3790–3798. Link
  102. Ryno, S. M.; Risko, C.; Brédas, J.-L. Impact of Molecular Packing on Electronic Polarization in Organic Crystals: The Case of Pentacene vs TIPS-Pentacene. Journal of the American Chemical Society 2014, 136 (17), 6421–6427. Link
  103. Warnan, J.; El Labban, A.; Cabanetos, C.; Hoke, E. T.; Shukla, P. K.; Risko, C.; Brédas, J.-L.; McGehee, M. D.; Beaujuge, P. M. Ring Substituents Mediate the Morphology of PBDTTPD-PCBM Bulk-Heterojunction Solar Cells. Chemistry of Materials 2014, 26 (7), 2299–2306. Link
  104. Gieseking, R. L.; Mukhopadhyay, S.; Risko, C.; Brédas, J.-L. Impact of the Nature of the Excited-State Transition Dipole Moments on the Third-Order Nonlinear Optical Response of Polymethine Dyes for All-Optical Switching Applications. ACS Photonics 2014, 1 (3), 261–269. Link
  105. Risko, C.; Brédas, J.-L. Small Optical Gap Molecules and Polymers: Using Theory to Design More Efficient Materials for Organic Photovoltaics. Multiscale Modelling of Organic and Hybrid Photovoltaics 2013, 1–38. Link
  106. Viani, L.; Risko, C.; Toney, M. F.; Breiby, D. W.; Brédas, J.-L. Substrate-Induced Variations of Molecular Packing, Dynamics, and Intermolecular Electronic Couplings in Pentacene Monolayers on the Amorphous Silica Dielectric. ACS Nano 2014, 8 , 690–700. Link
  107. Gieseking, R. L.; Mukhopadhyay, S.; Risko, C.; Marder, S. R.; Brédas, J.-L. 25th Anniversary Article: Design of Polymethine Dyes for All-Optical Switching Applications: Guidance from Theoretical and Computational Studies. Advanced Materials 2013, 26 , 68–84. Link
  108. Tummala, N. R.; Mehraeen, S.; Fu, Y.-T.; Risko, C.; Brédas, J.-L. Materials-Scale Implications of Solvent and Temperature on [6,6]-Phenyl-C61-Butyric Acid Methyl Ester (PCBM): A Theoretical Perspective. Advanced Functional Materials 2013, 23 (46), 5800–5813. Link
  109. Risko, C.; Brédas, J.-L. Healing Contact. Nature Materials 2013, 12 (12), 1084–1085. Link
  110. Estrada, L. A.; Stalder, R.; Abboud, K. A.; Risko, C.; Brédas, J.-L.; Reynolds, J. R. Understanding the Electronic Structure of Isoindigo in Conjugated Systems: A Combined Theoretical and Experimental Approach. Macromolecules 2013, 46 (22), 8832–8844. Link
  111. Ryno, S. M.; Lee, S. R.; Sears, J. S.; Risko, C.; Brédas, J.-L. Electronic Polarization Effects upon Charge Injection in Oligoacene Molecular Crystals: Description via a Polarizable Force Field. The Journal of Physical Chemistry C 2013, 117 (27), 13853–13860. Link
  112. McGarry, K. A.; Xie, W.; Sutton, C.; Risko, C.; Wu, Y.; Young, V. G.; Brédas, J.-L.; Frisbie, C. D.; Douglas, C. J. Rubrene-Based Single-Crystal Organic Semiconductors: Synthesis, Electronic Structure, and Charge-Transport Properties. Chemistry of Materials 2013, 25 (11), 2254–2263. Link
  113. Fraind, A. M.; Sini, G.; Risko, C.; Ryzhkov, L. R.; Brédas, J.-L.; Tovar, J. D. Charge Delocalization through Benzene, Naphthalene, and Anthracene Bridges in π-Conjugated Oligomers: An Experimental and Quantum Chemical Study. The Journal of Physical Chemistry B 2013, 117 (20), 6304–6317. Link
  114. Fu, Y.-T.; Risko, C.; Brédas, J.-L. Intermixing at the Pentacene-Fullerene Bilayer Interface: A Molecular Dynamics Study. Advanced Materials 2012, 25 (6), 878–882. Link
  115. Poelking, C.; Cho, E.; Malafeev, A.; Ivanov, V.; Kremer, K.; Risko, C.; Brédas, J.-L.; Andrienko, D. Characterization of Charge-Carrier Transport in Semicrystalline Polymers: Electronic Couplings, Site Energies, and Charge-Carrier Dynamics in Poly(Bithiophene-Alt-Thienothiophene) [PBTTT]. The Journal of Physical Chemistry C 2013, 117 (4), 1633–1640. Link
  116. Wunsch, B. H.; Rumi, M.; Tummala, N. R.; Risko, C.; Kang, D.-Y.; Steirer, K. X.; Gantz, J.; Said, M.; Armstrong, N. R.; Brédas, J.-L.; Bucknall, D.; Marder, S. R. Structure–Processing–Property Correlations in Solution-Processed, Small-Molecule, Organic Solar Cells. Journal of Materials Chemistry C 2013, 1 (34), 5250. Link
  117. Li, H.; Winget, P.; Risko, C.; Sears, J. S.; Brédas, J.-L. Tuning the Electronic and Photophysical Properties of Heteroleptic Iridium(Iii) Phosphorescent Emitters through Ancillary Ligand Substitution: A Theoretical Perspective. Physical Chemistry Chemical Physics 2013, 15 (17), 6293. Link
  118. Grimm, B.; Risko, C.; Azoulay, J. D.; Brédas, J.-L.; Bazan, G. C. Structural Dependence of the Optical Properties of Narrow Bandgap Semiconductors with Orthogonal Donor–Acceptor Geometries. Chemical Science 2013, 4 (4), 1807. Link
  119. Getmanenko, Y. A.; Fonari, M.; Risko, C.; Sandhu, B.; Galán, E.; Zhu, L.; Tongwa, P.; Hwang, D. K.; Singh, S.; Wang, H.; Tiwari, S. P.; Loo, Y.-L.; Brédas, J.-L.; Kippelen, B.; Timofeeva, T.; Marder, S. R. Benzo[1,2-b:6,5-B′]Dithiophene(Dithiazole)-4,5-Dione Derivatives: Synthesis, Electronic Properties, Crystal Packing and Charge Transport. Journal of Materials Chemistry C 2013, 1 (7), 1467. Link
  120. Kaafarani, B. R.; El-Ballouli, A. O.; Trattnig, R.; Fonari, A.; Sax, S.; Wex, B.; Risko, C.; Khnayzer, R. S.; Barlow, S.; Patra, D.; Timofeeva, T. V.; List, E. J. W.; Brédas, J.-L.; Marder, S. R. Bis(Carbazolyl) Derivatives of Pyrene and Tetrahydropyrene: Synthesis, Structures, Optical Properties, Electrochemistry, and Electroluminescence. Journal of Materials Chemistry C 2013, 1 (8), 1638. Link
  121. Cates, N.; Cho, E.; Junk, M. J. N.; Gysel, R.; Risko, C.; Kim, D.; Sweetnam, S.; Miller, C. E.; Richter, L. J.; Kline, R. J.; Heeney, M.; McCulloch, I.; Amassian, A.; Acevedo‐Feliz, D.; Knox, C.; Hansen, M. R.; Dudenko, D.; Chmelka, B. F.; Toney, M. F.; Brédas, J.; McGehee, M. D. Use of X‐Ray Diffraction, Molecular Simulations, and Spectroscopy to Determine the Molecular Packing in a Polymer‐Fullerene Bimolecular Crystal. Advanced Materials 2012, 24 (45), 6071–6079. Link
  122. Guo, S.; Mohapatra, S. K.; Romanov, A.; Timofeeva, T. V.; Hardcastle, K. I.; Yesudas, K.; Risko, C.; Brédas, J.-L.; Marder, S. R.; Barlow, S. N-Doping of Organic Electronic Materials Using Air-Stable Organometallics: A Mechanistic Study of Reduction by Dimeric Sandwich Compounds. Chemistry - A European Journal 2012, 18 (46), 14760–14772. Link
  123. Cates, N.; Cho, E.; Gysel, R.; Risko, C.; Coropceanu, V.; Miller, C. E.; Sweetnam, S.; Sellinger, A.; Heeney, M.; McCulloch, I.; Brédas, J.; Toney, M. F.; McGehee, M. D. Factors Governing Intercalation of Fullerenes and Other Small Molecules Between the Side Chains of Semiconducting Polymers Used in Solar Cells. Advanced Energy Materials 2012, 2 (10), 1208–1217. Link
  124. Pandey, L.; Risko, C.; Norton, J. E.; Brédas, J.-L. Donor–Acceptor Copolymers of Relevance for Organic Photovoltaics: A Theoretical Investigation of the Impact of Chemical Structure Modifications on the Electronic and Optical Properties. Macromolecules 2012, 45 (16), 6405–6414. Link
  125. Barlow, S.; Risko, C.; Odom, S. A.; Zheng, S.; Coropceanu, V.; Beverina, L.; Brédas, J.-L.; Marder, S. R. Tuning Delocalization in the Radical Cations of 1,4-Bis[4-(Diarylamino)Styryl]Benzenes, 2,5-Bis[4-(Diarylamino)Styryl]Thiophenes, and 2,5-Bis[4-(Diarylamino)Styryl]Pyrroles through Substituent Effects. Journal of the American Chemical Society 2012, 134 (24), 10146–10155. Link
  126. Beaujuge, P. M.; Tsao, H. N.; Hansen, M. R.; Amb, C. M.; Risko, C.; Subbiah, J.; Choudhury, K. R.; Mavrinskiy, A.; Pisula, W.; Brédas, J.-L.; So, F.; Müllen, K.; Reynolds, J. R. Synthetic Principles Directing Charge Transport in Low-Band-Gap Dithienosilole–Benzothiadiazole Copolymers. Journal of the American Chemical Society 2012, 134 (21), 8944–8957. Link
  127. Cho, E.; Risko, C.; Kim, D.; Gysel, R.; Cates Miller, N.; Breiby, D. W.; McGehee, M. D.; Toney, M. F.; Kline, R. J.; Bredas, J.-L. Three-Dimensional Packing Structure and Electronic Properties of Biaxially Oriented Poly(2,5-Bis(3-Alkylthiophene-2-Yl)Thieno[3,2-b]Thiophene) Films. Journal of the American Chemical Society 2012, 134 (14), 6177–6190. Link
  128. Ko, S.; Hoke, E. T.; Pandey, L.; Hong, S.; Mondal, R.; Risko, C.; Yi, Y.; Noriega, R.; McGehee, M. D.; Brédas, J.-L.; Salleo, A.; Bao, Z. Controlled Conjugated Backbone Twisting for an Increased Open-Circuit Voltage While Having a High Short-Circuit Current in Poly(Hexylthiophene) Derivatives. Journal of the American Chemical Society 2012, 134 (11), 5222–5232. Link
  129. Sajoto, T.; Tiwari, S. P.; Li, H.; Risko, C.; Barlow, S.; Zhang, Q.; Cho, J.-Y.; Brédas, J.-L.; Kippelen, B.; Marder, S. R. Synthesis and Characterization of Naphthalene Diimide/Diethynylbenzene Copolymers. Polymer 2012, 53 (5), 1072–1078. Link
  130. Qiao, Y.; Wei, Z.; Risko, C.; Li, H.; Brédas, J.-L.; Xu, W.; Zhu, D. Synthesis, Experimental and Theoretical Characterization, and Field-Effect Transistor Properties of a New Class of Dibenzothiophene Derivatives: From Linear to Cyclic Architectures. J. Mater. Chem. 2012, 22 (4), 1313–1325. Link
  131. Mukhopadhyay, S.; Risko, C.; Marder, S. R.; Brédas, J.-L. Polymethine Dyes for All-Optical Switching Applications: A Quantum-Chemical Characterization of Counter-Ion and Aggregation Effects on the Third-Order Nonlinear Optical Response. Chemical Science 2012, 3 (10), 3103. Link
  132. Bloking, J. T.; Han, X.; Higgs, A. T.; Kastrop, J. P.; Pandey, L.; Norton, J. E.; Risko, C.; Chen, C. E.; Brédas, J.-L.; McGehee, M. D.; Sellinger, A. Solution-Processed Organic Solar Cells with Power Conversion Efficiencies of 2.5% Using Benzothiadiazole/Imide-Based Acceptors. Chemistry of Materials 2011, 23 (24), 5484–5490. Link
  133. Polander, L. E.; Pandey, L.; Barlow, S.; Tiwari, S. P.; Risko, C.; Kippelen, B.; Brédas, J.-L.; Marder, S. R. Benzothiadiazole-Dithienopyrrole Donor–Acceptor–Donor and Acceptor–Donor–Acceptor Triads: Synthesis and Optical, Electrochemical, and Charge-Transport Properties. The Journal of Physical Chemistry C 2011, 115 (46), 23149–23163. Link
  134. Li, H.; Risko, C.; Seo, J. H.; Campbell, C.; Wu, G.; Brédas, J.-L.; Bazan, G. C. Fullerene–Carbene Lewis Acid–Base Adducts. Journal of the American Chemical Society 2011, 133 (32), 12410–12413. Link
  135. Polander, L. E.; Tiwari, S. P.; Pandey, L.; Seifried, B. M.; Zhang, Q.; Barlow, S.; Risko, C.; Brédas, J.-L.; Kippelen, B.; Marder, S. R. Solution-Processed Molecular Bis(Naphthalene Diimide) Derivatives with High Electron Mobility. Chemistry of Materials 2011, 23 (15), 3408–3410. Link
  136. Getmanenko, Y. A.; Risko, C.; Tongwa, P.; Kim, E.-G.; Li, H.; Sandhu, B.; Timofeeva, T.; Brédas, J.-L.; Marder, S. R. Mono- and Dicarbonyl-Bridged Tricyclic Heterocyclic Acceptors: Synthesis and Electronic Properties. The Journal of Organic Chemistry 2011, 76 (8), 2660–2671. Link
  137. Risko, C.; McGehee, M. D.; Brédas, J.-L. A Quantum-Chemical Perspective into Low Optical-Gap Polymers for Highly-Efficient Organic Solar Cells. Chem. Sci. 2011, 2 (7), 1200–1218. Link
  138. Ko, S.; Mondal, R.; Risko, C.; Lee, J. K.; Hong, S.; McGehee, M. D.; Brédas, J.-L.; Bao, Z. Tuning the Optoelectronic Properties of Vinylene-Linked Donor−Acceptor Copolymers for Organic Photovoltaics. Macromolecules 2010, 43 (16), 6685–6698. Link
  139. Choi, S. H.; Risko, C.; Delgado, M. C. R.; Kim, B.; Brédas, J.-L.; Frisbie, C. D. Transition from Tunneling to Hopping Transport in Long, Conjugated Oligo-Imine Wires Connected to Metals. Journal of the American Chemical Society 2010, 132 (12), 4358–4368. Link
  140. Scott, A.; Risko, C.; Valley, N.; Ratner, M. A.; Janes, D. B. Molecular Modulation of Schottky Barrier Height in Metal-Molecule-Silicon Diodes: Capacitance and Simulation Results. Journal of Applied Physics 2010, 107 (2), 024505. Link
  141. Usta, H.; Risko, C.; Wang, Z.; Huang, H.; Deliomeroglu, M. K.; Zhukhovitskiy, A.; Facchetti, A.; Marks, T. J. Design, Synthesis, and Characterization of Ladder-Type Molecules and Polymers. Air-Stable, Solution-Processable n-Channel and Ambipolar Semiconductors for Thin-Film Transistors via Experiment and Theory. Journal of the American Chemical Society 2009, 131 (15), 5586–5608. Link
  142. Risko, C.; Zangmeister, C. D.; Yao, Y.; Marks, T. J.; Tour, J. M.; Ratner, M. A.; van Zee, R. D. Experimental and Theoretical Identification of Valence Energy Levels and Interface Dipole Trends for a Family of (Oligo)Phenylene-Ethynylenethiols Adsorbed on Gold. The Journal of Physical Chemistry C 2008, 112 (34), 13215–13225. Link
  143. Lu, G.; Usta, H.; Risko, C.; Wang, L.; Facchetti, A.; Ratner, M. A.; Marks, T. J. Synthesis, Characterization, and Transistor Response of Semiconducting Silole Polymers with Substantial Hole Mobility and Air Stability. Experiment and Theory. Journal of the American Chemical Society 2008, 130 (24), 7670–7685. Link
  144. Risko, C.; Coropceanu, V.; Barlow, S.; Geskin, V.; Schmidt, K.; Gruhn, N. E.; Marder, S. R.; Brédas, J.-L. Trends in Electron-Vibration and Electronic Interactions in Bis(Dimethylamino) Mixed-Valence Systems: A Joint Experimental and Theoretical Investigation. The Journal of Physical Chemistry C 2008, 112 (21), 7959–7967. Link
  145. Berlin, A.; Risko, C.; Ratner, M. A. Geometric and Chelation Influences on the Electronic Structure and Optical Properties of Tetra(Carboxylic Acid)Phenyleneethynylene Dyes. The Journal of Physical Chemistry A 2008, 112 (18), 4202–4208. Link
  146. Koh, S. E.; Risko, C.; da Silva Filho, D. A.; Kwon, O.; Facchetti, A.; Brédas, J.-L.; Marks, T. J.; Ratner, M. A. Modeling Electron and Hole Transport in Fluoroarene-Oligothiopene Semiconductors: Investigation of Geometric and Electronic Structure Properties. Advanced Functional Materials 2008, 18 (2), 332–340. Link
  147. Zhan, X.; Haldi, A.; Risko, C.; Chan, C. K.; Zhao, W.; Timofeeva, T. V.; Korlyukov, A.; Antipin, M. Yu.; Montgomery, S.; Thompson, E.; An, Z.; Domercq, B.; Barlow, S.; Kahn, A.; Kippelen, B.; Brédas, J.-L.; Marder, S. R. Fluorenyl-Substituted Silole Molecules: Geometric, Electronic, Optical, and Device Properties. Journal of Materials Chemistry 2008, 18 (26), 3157. Link
  148. Grave, C.; Risko, C.; Shaporenko, A.; Wang, Y.; Nuckolls, C.; Ratner, M. A.; Rampi, M. A.; Zharnikov, M. Charge Transport through Oligoarylene Self-Assembled Monolayers: Interplay of Molecular Organization, Metal–Molecule Interactions, and Electronic Structure. Advanced Functional Materials 2007, 17 (18), 3816–3828. Link
  149. Scott, A.; Janes, D. B.; Risko, C.; Ratner, M. A. Fabrication and Characterization of Metal-Molecule-Silicon Devices. Applied Physics Letters 2007, 91 (3), 033508. Link
  150. Barlow, S.; Zhang, Q.; Kaafarani, B. R.; Risko, C.; Amy, F.; Chan, C. K.; Domercq, B.; Starikova, Z. A.; Antipin, M. Yu.; Timofeeva, T. V.; Kippelen, B.; Brédas, J.-L.; Kahn, A.; Marder, S. R. Synthesis, Ionisation Potentials and Electron Affinities of Hexaazatrinaphthylene Derivatives. Chemistry - A European Journal 2007, 13 (12), 3537–3547. Link
  151. Coropceanu, V.; Boldyrev, S. I.; Risko, C.; Brédas, J.-L. The Impact of Symmetric Modes on Intramolecular Electron Transfer: A Semi-Classical Approach. Chemical Physics 2006, 326 , 107–114. Link
  152. Zhan, X.; Risko, C.; Korlyukov, A.; Sena, F.; Timofeeva, T. V.; Antipin, M. Yu.; Barlow, S.; Brédas, J.-L.; Marder, S. R. Comparative Studies of the Geometric and Electronic Properties of 1,1-Disubstituted-2,3,4,5-Tetraphenylsiloles and 1,1,2,2-Tetramethyl-3,4,5,6-Tetraphenyl-1,2-Disila-3,5-Cyclohexadiene. J. Mater. Chem. 2006, 16 (39), 3814–3822. Link

Book Chapters

  1. Recent Advances in the Computational Characterization of π-Conjugated Systems. J.L. Brédas, X. Chen, T. Körzdörfer, H. Li, C. Risko, S.M. Ryno, & T. Wang. Handbook of Conducting Polymers, 4th Edition. Eds. T.A. Skotheim, B.C. Thompson & J.R. Reynolds. CRC Press (2019).
  2. Non-Covalent Interactions in Organic Electronic Materials. J.L. Brédas, V. Coropceanu, C. Doiron, Y.T. Fu, T. Körzdörfer, L. Pandey, C. Risko, J.S. Sears, B. Yang, Y. Yi, Y. & C. Zhang. Non-Covalent Interactions in Quantum Chemistry and Physics. Eds. A.O. de la Roza & G. DiLabio. Elsevier (2017).
  3. Understanding the Relationships Among Molecular Structure, Excited-State Properties, and Polarizabilities of π-Conjugated Chromophores. R.L. Gieseking, C. Risko, S.R. Marder & J.L. Brédas.WSPC Reference on Organic Electronics. Eds. J.L. Brédas & S.R. Marder. World Scientific Publishing Company Pte. Ltd. (2017).
  4. Small Optical Gap Molecules and Polymers: Using Theory to Design More Efficient Materials for Organic Photovoltaics. C. Risko & J.L. Brédas. Topics in Current Chemistry. Eds. D. Beljonne & J. Cornil. Springer-Verlag, Berlin. 1-38 (2013).
  5. Modeling the Electronic and Optical Processes in Organic Solar Cells: Density Functional Theory and Beyond. J.L. Brédas, V. Coropceanu, C. Doiron, Y.T. Fu, T. Körzdörfer, L. Pandey, C. Risko, J.S. Sears, B. Yang, Y. Yi, Y. & C. Zhang. Organic Solar Cells: Fundamentals, Devices, and Upscaling. Eds. B. Rand & H. Richter. Pan Stanford Publishing (2013).

Article Reviews and Editorials

  1. Festschrift in Honor of Prof. Jean-Luc Brédas on His 65th Birthday. C. Risko, E. Reichmanis, R. Lazzaroni, Z. Shuai, C. Toro & J.M. Buriak. Chemistry of Materials (2019) 31, 6307-6308. Link
  2. Organic Semiconductors Healing Contact. C. Risko & J.L. Brédas. Nature Materials (2013) 12, 1084-1085. Link

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