74. J. Isokuortti, C. J. O’Dea, S. R. Allen, S. Vasylevskyi, Z. A. Page, & S. T. Roberts, “Putting the “P” back in Delayed Fluorescence – Silylethynyl Substitution Generates Efficient Pyrene Annihilators for Red-to-Blue Photon Upconversion” Submitted. ChemRxiv Version.
73. B. R. Pollok, J. R. Brinker, S. G. Lewis, S. Daemi, S. T. Roberts, F. E. Osterloh, J. D. Eaves, & M. J. Rose, “Tetracene Functionalized Si(111) Achieves Enhanced Solar-to-Chemical Energy Conversion with Defect Free TiO2 via Molecular Acceptor States” Submitted.
72. K. Tanoue, H. Ishii, C. L. Marsters, S. T. Roberts, & T. Miyamae, “Molecular Orientation at Indigo/Dielectric Interfaces Impacts OFET Device Performance” Submitted.
71. T. S. Volek, M. A. Verkamp, G. N. Ruiz, A. J. Staat, B. C. Li, M. J. Rose, J. D. Eaves, & S. T. Roberts, “Slowed Singlet Exciton Fission Enhances Triplet Exciton Transport in Select Perylenediimide Crystals” J. Am. Chem. Soc. 146(43), 29575-87, (2024).
70. P. Metola, S. T. Roberts, E. V. Anslyn, “Is the Spontaneity of Chemical Reactions Related to Time Travel?” Supramolecular Chemistry. (2024), DOI: 10.1080/10610278.2024.2404029.
69. K. S. Wilson, T. S. Volek, N. Gross, S. Link, C. R. Baiz, & S. T. Roberts, “Transient Absorption Microscopy using Widefield Lock-in Camera Imaging” J. Phys. Chem. C. 128(28), 11723-31, (2024).
68. J. K. Sowa, D. M. Cadena, A. Mehmood, B. G. Levine, S. T. Roberts, & P. J. Rossky, “IR Spectroscopy of Carboxylate-passivated Semiconducting Nanocrystals: Simulation and Experiment” J. Phys. Chem. C. 128(21), 8724-31, (2024).
67. S. Adhikari, N. Gross, K. S. Wilson, O. Verma, Z. Jia, C. F. Landes, S. T. Roberts, & S. Link, “On-chip Lock-in Detection for Ultrafast Spectroscopy of Single Particles” J. Phys. Chem. C. 128(21), 8708-15, (2024).
66. J. M. Strain, G. N. Ruiz, S. T. Roberts, & M. J. Rose, “Methylation of Si(111) Modulates Molecular Orientation in Perylenediimide (PDI) Thin Films” Langmuir. 40(5), 2519-30, (2024).
65. C. J. O’Dea, J. Isokuortti, E. E. Comer, S. T. Roberts, & Z. A. Page, “Triplet Upconversion Under Ambient Conditions Enables Digital Light Processing 3D Printing” ACS Cent. Sci. 10(2), 272-82, (2024). Press Release.
64. C. R. Baiz, J. Brendenbeck, M. Cho, T. L. C. Jansen, A. T. Krummel, & S. T. Roberts, “Editorial: Celebrating 25 Years of 2D IR Spectroscopy” J. Chem. Phys. 160, 010401, (2024).
63. T. S. Volek, Z. T. Armstrong, J. K. Sowa, K. S. Wilson, M. Bohlmann Kunz, K. Bera, M. Koble, R. R. Frontiera, P. J. Rossky, M. T. Zanni, & S. T. Roberts, “Structural Disorder at the Edges of Rubrene Crystals Enhances Singlet Fission” J. Phys. Chem. Lett. 14(50), 11497-505, (2023). Featured Editorial.
62. A. Stafford, S. R. Allen, L. Estergreen, K. Kafle, S. T. Roberts, & Z. A. Page, “Efficient Near Infrared Photopolymerizations using azaBODIPYs with Electron Donating Groups and Intramolecular Charge Transfer” Macromolecules. 56(23), 9804-10, (2023).
61. A. Stafford, S. R. Allen, T. A. Grusenmeyer, C. J. O’Dea, L. Estergreen, S. T. Roberts, & Z. A. Page, “Thiophene-fused Boron Dipyrromethenes as Energy Efficient Near-infrared Photocatalysts for Radical Polymerizations” J. Mater. Chem. A. 11, 22259-66, (2023).
60. J. K. Sowa, S. T. Roberts, & P. J. Rossky, “Exploring Configurations of Nanocrystal Ligands Using Machine-Learned Force Fields” J. Phys. Chem. Lett. 14(32), 7215–22, (2023).
59. N. Gross, C. T. Kuhs, B. Ostovar, W.-Y. Chiang, K. S. Wilson, T. S. Volek, Z. M. Faitz, C. C. Carlin, J. A. Dionne, M. T. Zanni, M. Gruebele, S. T. Roberts, S. Link, & C. F. Landes, “Progress and Prospects in Optical Ultrafast Microscopy: Transient Absorption and Two-Dimensional Spectroscopy” J. Phys. Chem. C. 127(30), 14557-86, (2023).
58. K. Wang, R. P. Cline, J. Schwan, J. M. Strain, S. T. Roberts, L. Mangolini, J. D. Eaves, & M. L. Tang, "Efficient Photon Upconversion Enabled by Strong Coupling Between Silicon Quantum Dots and Anthracene" Nat. Chem. 15, 1172-78, (2023), Press Release. Radio Story.
57. A. Uddin, S. R. Allen, A. K. Rylski, C. J. O’Dea, J. T. Ly, T. A. Grusenmyer, S. T. Roberts, & Z. A. Page, “Do the Twist: Efficient Heavy-Atom-Free Visible Light Polymerization Facilitated by Spin-Orbit Charge Transfer Intersystem Crossing” Angew. Chem. Int. Ed. (2023), 62, e202219140.
56. A. Al-Zubeidi, B. Ostovar, C. C. Carlin, B. C. Li, S. A. Lee, W.-Y. Chiang, N. Gross, S. Dutta, A. Misiura, E. K. Searles, A. Chakraborty, S. T. Roberts, J. A. Dionne, P. J. Rossky, C. F. Landes, & S. Link, “Mechanism for Plasmon-generated Solvated Electrons” Proc. Natl. Acc. Sci. U.S.A. 120(3), e2217035120, (2023). Press Release.
55. J. T. Boette, K. M. Daniel, J. W. Lietzke, S. M. Amorde, & S. T. Roberts, "Research-Focused Approach for Introducing Undergraduate Students to Aromatic Organic Synthesis at a Community College" J. Chem. Educ. 100(2), 572-80, (2023).
54. D. M. Cadena, J. K. Sowa, D. E. Cotton, C. D. Wight, C. L. Hoffman, H. R. Wagner, J. T. Boette, E. K. Raulerson, B. L. Iverson, P. J. Rossky, & S. T. Roberts, “Aggregation of Charge Acceptors on Nanocrystal Surfaces Alters Rates of Photoinduced Electron Transfer” J. Am. Chem. Soc. 144(49), 22676-88, (2022). Press Release.
53. V. Paulino, D. M. Cadena, K. Liu, A. Mukhopadhyay, S. T. Roberts, & J.-H. Olivier, “The Length of Molecular Tethers can be used to Control the Structure and Electronic Properties of Stapled Supramolecular Polymers” Chem. Mater. 34(14), 6518-28, (2022).
52. L. Estergreen, A. R. Mencke, D. E. Cotton, N. V. Korovina, J. Michl, S. T. Roberts, M. E. Thompson, & S. E. Bradforth, “Controlling Symmetry Breaking Charge Transfer in BODIPY Pairs” Acc. Chem. Resh. 55(11), 1561-72, (2022).
51. E. K. Raulerson, D. M. Cadena, M. A. Jabed, C. D. Wight, I. Lee, H. R. Wagner, J. T. Brewster, B. L. Iverson, S. Kilina, & S. T. Roberts, “Using Spectator Ligands to Enhance Nanocrystal-to-Molecule Electron Transfer” J. Phys. Chem. Lett. 13, 1416-23, (2022).
50. E. M. Rigsby, T. Miyashita, D. A. Fishman, S. T. Roberts, & M. L. Tang, “CdSe Nanocrystal Sensitized Photon Upconverting Film” RSC Adv., 11, 31042-46, (2021).
49. T. Huang, T. T. Koh, J. Schwan, T. Tran, P. Xia, K. Wang, L. Mangolini, M. L. Tang, & S. T. Roberts, “Bidirectional Triplet Exciton Transfer Between Silicon Nanocrystals and Perylene” Chem. Sci., 12, 6737-46,(2021).
48. D. E. Cotton & S. T. Roberts, “Sensitivity of Sum Frequency Generation Experimental Conditions to Thin Film Interference Effects” J. Chem. Phys., 154, 114704, (2021).
47. A. Stafford, D. Ahn, E. K. Raulerson, K.-Y. Chung, K. Sun, D. M. Cadena, E. M. Forrister, S. R. Yost, S. T. Roberts, & Z. A. Page, "Catalyst Halogenation Enables Rapid and Efficient Polymerizations with Visible to Far-Red Light" J. Am. Chem. Soc., 142(34), 14733-42, (2020).
46. B. R. Wygnant, G. T. Geberth, A. Z. Ye, A. Dolocan, D. E. Cotton, S. T. Roberts, D. A. Vanden Bout, & C. B. Mullins, “Moisture-Driven Formation and Growth of Quasi-2D Organolead Halide Perovskite Crystallites” ACS Appl. Energy Mater. 3(7), 6280-90, (2020).
45. D. E. Cotton, A. P. Moon, & S. T. Roberts, “Using Electronic Sum-Frequency Generation to Analyze the Interfacial Structure of Singlet Fission-Capable Perylenediimide Thin Films” J. Phys. Chem. C 124(21), 11401-13, (2020).
44. S. R. Suravarapu, S. P. Parvathaneni, J. A. Bender, S. T. Roberts, & M. J. Krische, "Benzannulation via Ruthenium(0)-Catalyzed Transfer Hydrogenative Cycloaddition: Precision Synthesis and Photophysical Characterization of Soluble Diindenoperylenes" Chem. Euro. J. 26(33), 7504-10, (2020).
43. M. A. Blemker, S. L. Gibbs, E. K. Raulerson, D. J. Milliron, & S. T. Roberts, “Modulation of the Visible Absorption and Reflection Profiles of ITO Nanocrystal Thin Films by Plasmon Excitation” ACS Photonics. 7(5), 1188-96, (2020).
42. T. T. Koh, T. Huang, J. Schwan, P. Xia, S. T. Roberts, L. Mangolini, & M. L. Tang, "Low Temperature Radical Initiated Hydrosilylation of Silicon Quantum Dots" Faraday Discuss., 222, 190-200, (2020).
41. P. Xia, E. K. Raulerson, D. Coleman, C. S. Gerke, L. Mangolini, M. L. Tang, & S. T. Roberts, "Achieving Spin-triplet Exciton Transfer between Silicon and Molecular Acceptors for Photon Upconversion" Nat. Chem. 12, 137-44, (2020). Press Release.
40. M. S. Azzaro, A. K. Le, H. Wang, & S. T. Roberts, "Ligand-Enhanced Energy Transport in Nanocrystal Solids Viewed with Two-Dimensional Electronic Spectroscopy" J. Phys. Chem. Lett. 10, 5602-08, (2019).
39. H. Sato, M. A. Blemker, G. Hellinghausen, D. W. Armstrong, J. W. Nafie, S. T. Roberts, & M. J. Krische, "Triple Helical Ir(ppy)3 Phenylene Cage Prepared via Diol-Mediated Benzannulation: Synthesis, Resolution, Absolute Stereochemistry and Photophysical Properties" Chem. Eur. J. 25(37), 8719-24, (2019).
38. Z. A. Kasun, H. Sato, J. Nie, Y. Mori, J. A. Bender, S. T. Roberts, & M. J. Krische, "Alternating oligo(o,p-Phenylenes) via Ruthenium Catalyzed Diol-Diene Benzannulation: Orthogonality to Cross-Coupling Enables De Novo Nanographene and PAH Construction" Chem. Sci., 9, 7866-73, (2018).
37. J. A. Bender, E. K. Raulerson, X. Li, T. Goldzak, P. Xia, T. Van Voorhis, M. L. Tang, & S. T. Roberts, "Surface States Mediate Triplet Energy Transfer in Nanocrystal-Acene Composite Systems" J. Am. Chem. Soc., 140(24), 7543-53, (2018).
36. M. S. Azzaro, A. Dodin, D. Y. Zhang, A. P. Willard, & S. T. Roberts, "Exciton-Delocalizing Ligands Can Speed Up Energy Migration in Nanocrystal Solids" Nano Letters, 18(5), 3259-70, (2018).
35. H. Sato, J. A. Bender, S. T. Roberts, & M. J. Krische, "Helical Rod-like Phenylene Cages via Ruthenium Catalyzed Diol-Diene Benzannulation: A Cord of Three Strands" J. Am. Chem. Soc. 140(7), 2455-59, (2018).
34. A. K. Le, J. A. Bender, D. H. Arias, D. E. Cotton, J. C. Johnson, & S. T. Roberts, "Singlet Fission Involves an Interplay Between Energetic Driving Force and Electronic Coupling in Perylenediimide Films" J. Am. Chem. Soc. 140(2), 814-26, (2018).
33. R. E. McAnally, J. A. Bender, L. Estergreen, R. Haiges, S. E. Bradforth, J. M. Dawlaty, S. T. Roberts, & A. S. Rury, “Defects Cause Tails in the Optical Spectra of a Crystalline Tetracene Derivative” J. Phys. Chem. Lett. 8, 5993–6001, (2017).
32. A. P. Moon, R. Pandey, J. A. Bender, D. E. Cotton, B. A. Renard, & S. T. Roberts, "Using Heterodyne-Detected Electronic Sum Frequency Generation to Probe the Electronic Structure of Buried Interfaces" J. Phys. Chem. C. 121(34), 18653-64, (2017).
31. R. W. Johns, M. A. Blemker, M. S. Azzaro, S. Heo, E. L. Runnerstrom, D. J. Milliron, & S. T. Roberts, "Charge Carrier Concentration Dependence of Ultrafast Plasmonic Relaxation in Conducting Metal Oxide Nanocrystals" J. Mater. Chem. C. 5, 5757-63, (2017).
30. M. S. Azzaro, M. C. Babin, S. K. Stauffer, G. Henkelman, & S. T. Roberts, "Can Exciton-delocalizing Ligands Facilitate Hot Hole Transfer from Semiconductor Nanocrystals?" J. Phys. Chem. C. 120(49), 28224-34, (2016).
29. A. K. Le, J. A. Bender, & S. T. Roberts, "Slow Singlet Fission Observed in a Perylenediimide Thin Film" J. Phys. Chem. Lett. 7, 4922-28, (2016).
28. R. Pandey, A. P. Moon, J. A. Bender, & S. T. Roberts, "Extracting the density of states of copper phthalocyanine at the SiO2 interface with electronic sum frequency generation" J. Phys. Chem. Lett. 7(6), 1060-66, (2016).
27. S. T. Roberts, "Energy transport: Singlet to triplet and back again" Nat. Chem. 7, 764-765, (2015).
Based on work done prior to moving to UT Austin
26. S. T. Roberts, A. Mandal, & A. Tokmakoff, “Local and collective reaction coordinates in the transport of the aqueous hydroxide ion” J. Phys. Chem. B. 118(28), 8062-69, (2014).
25. S. Das, P. P. Khlyabich, B. Burkhart, S. T. Roberts, E. Couderc, B. C. Thompson, & S. E. Bradforth, “Quantifying charge recombination in solar cells based on donor-acceptor P3HT analogs” J. Phys. Chem. C. 118, 6650-60, (2014).
24. R. Sarkissian, S. T. Roberts, T.-W. Yeh, S. Das, S. E. Bradforth, J. O’Brien, & P. D. Dapkus, “Photon quenching in InGaN quantum well light emitting devices” Appl. Phys. Lett. 103, 041123, (2013).
23. J. N. Mastron, S. T. Roberts, R. E. McAnally, M. E. Thompson, & S. E. Bradforth, “Aqueous colloidal acene nanoparticles: A new platform for studying singlet fission” J. Phys. Chem. B. 117(49), 15519-26, (2013).
22. P. Dhar, P. P. Khlyabich, B. Burkhart, S. T. Roberts, S. S. Malyk, B. C. Thompson, & A. V. Benderskii, “Annealing induced changes in the molecular orientation of poly-3-hexylthiophene at buried interfaces” J. Phys. Chem. C. 117(29), 15213-20, (2013).
21. Q. Zhong, V. V. Diev, S. T. Roberts, S. E. Bradforth, & M. E. Thompson, “Fused porphyrin-single walled carbon nanotube hybrids: Efficient formation and photophysical characterization” ACS Nano. 7(4), 3466-75, (2013).
20. S. T. Roberts, R. E. McAnally, J. N. Mastron, D. H. Webber, M. T. Whited, R. L. Brutchey, M. E. Thompson, & S. E. Bradforth, “Efficient singlet fission discovered in a disordered acene film” J. Am. Chem. Soc. 134(14), 6388-400, (2012).
19. M. T. Whited, N. M. Patel, S. T. Roberts, P. I. Djurovich, S. E. Bradforth, & M. E. Thompson, “Symmetry-breaking intramolecular charge transfer in the excited state of meso-linked BODIPY dyads” Chem. Commun. 48, 284-86, (2012).
18. S. T. Roberts, C. W. Schlenker, V. Barlier, R. E. McAnally, Y. Zhang, J. N. Mastron, M. E. Thompson, and S. E. Bradforth, “Observation of triplet exciton formation in a platinum sensitized organic photovoltaic device” J. Phys. Chem. Lett. 2(2), 49-54, (2011).
17. K. Ramasesha, S. T. Roberts, R. A. Nicodemus, A. Mandal, & A. Tokmakoff, ”Ultrafast 2D IR anisotropy of water reveals reorientation during hydrogen-bond switching" J. Chem. Phys. 135, 054509, (2011).
16. S. T. Roberts, K. Ramasesha, P. B. Petersen, A. Mandal, and A. Tokmakoff, “Proton transfer in concentrated aqueous hydroxide visualized using ultrafast infrared spectroscopy” J. Phys. Chem. A. 115(16), 3957-72, (2011).
15. M. T. Whited, P. I. Djurovich, S. T. Roberts, A. C. Durrell, C. W. Schlenker, S. E. Bradforth, and M. E. Thompson, “Singlet and triplet excitation management in a bichromophoric near-infrared-phosphorescent BODIPY-benzoporphyrin platinum complex” J. Am. Chem. Soc. 133(1), 88-96 (2011).
14. S. T. Roberts, J. J. Loparo, K. Ramasesha, and A. Tokmakoff, “A fast-scanning Fourier transform 2D IR interferometer” Opt. Commun. 284, 1062-66, (2011).
13. R. A. Nicodemus, K. Ramasesha, S. T. Roberts, and A. Tokmakoff, “Hydrogen bond rearrangements in water probed with temperature-dependent 2D IR” J. Phys. Chem. Lett. 1(7), 1068-72, (2010).
12. S. T. Roberts, P. B. Petersen, K. Ramasesha, A. Tokmakoff, I. S. Ufimtsev, and T. J. Martinez, “Observation of a Zundel-like transition state during proton transfer in aqueous hydroxide” Proc. Natl. Acc. Sci. U.S.A. 106(36), 15154-59, (2009).
11. S. T. Roberts, K. Ramasesha, and A. Tokmakoff, “Structural rearrangements in water viewed through two-dimensional infrared spectroscopy” Acc. Chem. Resh. 42(9), 1239-49, (2009).
10. P. B. Petersen, S. T. Roberts, K. Ramasesha, D. G. Nocera, and A. Tokmakoff, “Ultrafast N-H vibrational dynamics of cyclic doubly hydrogen-bonded homo- and heterodimers” J. Phys. Chem. B. 112, 13167-71, (2008).
9. J. J. Loparo, S. T. Roberts, R. A. Nicodemus, and A. Tokmakoff, “Variation of the transition dipole moment across the OH stretching band of water” Chem. Phys. 341(1-3), 218-29 (2007).
8. J. R. Schmidt, S. T. Roberts, J. J. Loparo, A. Tokmakoff, M. D. Fayer, and J. L. Skinner, “Are water simulation models consistent with steady-state and ultrafast vibrational spectroscopy experiments?” Chem. Phys. 341(1-3), 143-57, (2007).
7. A. D. Smith, C. K.-F. Shen, S. T. Roberts, R. Helgeson, and B. J. Schwartz, “Ionic strength and solvent control over the physical structure, electronic properties and superquenching of conjugated polyelectrolytes” Res. Chem. Intermed. 33(1-2), 125-42, (2007).
6. S. T. Roberts, J. J. Loparo, and A. Tokmakoff, “Characterization of spectral diffusion from two-dimensional line shapes” J. Chem. Phys. 125, 084502 (2006).
5. J. J. Loparo, S. T. Roberts, and A. Tokmakoff, “Multidimensional infrared spectroscopy of water. I. Vibrational dynamics in two-dimensional IR line shapes” J. Chem. Phys. 125, 194521, (2006).
4. J. J. Loparo, S. T. Roberts, and A. Tokmakoff, “Multidimensional infrared spectroscopy of water. II. Hydrogen bond switching dynamics” J. Chem. Phys. 125, 194522, (2006).
3. J. D. Eaves, J. J. Loparo, C. J. Fecko, S. T. Roberts, A. Tokmakoff, and P. L. Geissler, “Hydrogen bonds in liquid water are broken only fleetingly” Proc. Natl. Acc. Sci. U.S.A. 102(37) 13019-22. (2005).
2. C. J. Fecko, J. J. Loparo, S. T. Roberts, and A. Tokmakoff, “Local hydrogen bonding dynamics and collective reorganization in water: Ultrafast infrared spectroscopy of HOD/D2O” J. Chem. Phys. 122, 054506 (2005).
1. J. J. Loparo, C. J. Fecko, J. D. Eaves, S. T. Roberts, and A. Tokmakoff, “Reorientational and configurational fluctuations in water observed on molecular length scales” Phys. Rev. B. 70, 180201(R), (2004).
73. B. R. Pollok, J. R. Brinker, S. G. Lewis, S. Daemi, S. T. Roberts, F. E. Osterloh, J. D. Eaves, & M. J. Rose, “Tetracene Functionalized Si(111) Achieves Enhanced Solar-to-Chemical Energy Conversion with Defect Free TiO2 via Molecular Acceptor States” Submitted.
72. K. Tanoue, H. Ishii, C. L. Marsters, S. T. Roberts, & T. Miyamae, “Molecular Orientation at Indigo/Dielectric Interfaces Impacts OFET Device Performance” Submitted.
71. T. S. Volek, M. A. Verkamp, G. N. Ruiz, A. J. Staat, B. C. Li, M. J. Rose, J. D. Eaves, & S. T. Roberts, “Slowed Singlet Exciton Fission Enhances Triplet Exciton Transport in Select Perylenediimide Crystals” J. Am. Chem. Soc. 146(43), 29575-87, (2024).
70. P. Metola, S. T. Roberts, E. V. Anslyn, “Is the Spontaneity of Chemical Reactions Related to Time Travel?” Supramolecular Chemistry. (2024), DOI: 10.1080/10610278.2024.2404029.
69. K. S. Wilson, T. S. Volek, N. Gross, S. Link, C. R. Baiz, & S. T. Roberts, “Transient Absorption Microscopy using Widefield Lock-in Camera Imaging” J. Phys. Chem. C. 128(28), 11723-31, (2024).
68. J. K. Sowa, D. M. Cadena, A. Mehmood, B. G. Levine, S. T. Roberts, & P. J. Rossky, “IR Spectroscopy of Carboxylate-passivated Semiconducting Nanocrystals: Simulation and Experiment” J. Phys. Chem. C. 128(21), 8724-31, (2024).
67. S. Adhikari, N. Gross, K. S. Wilson, O. Verma, Z. Jia, C. F. Landes, S. T. Roberts, & S. Link, “On-chip Lock-in Detection for Ultrafast Spectroscopy of Single Particles” J. Phys. Chem. C. 128(21), 8708-15, (2024).
66. J. M. Strain, G. N. Ruiz, S. T. Roberts, & M. J. Rose, “Methylation of Si(111) Modulates Molecular Orientation in Perylenediimide (PDI) Thin Films” Langmuir. 40(5), 2519-30, (2024).
65. C. J. O’Dea, J. Isokuortti, E. E. Comer, S. T. Roberts, & Z. A. Page, “Triplet Upconversion Under Ambient Conditions Enables Digital Light Processing 3D Printing” ACS Cent. Sci. 10(2), 272-82, (2024). Press Release.
64. C. R. Baiz, J. Brendenbeck, M. Cho, T. L. C. Jansen, A. T. Krummel, & S. T. Roberts, “Editorial: Celebrating 25 Years of 2D IR Spectroscopy” J. Chem. Phys. 160, 010401, (2024).
63. T. S. Volek, Z. T. Armstrong, J. K. Sowa, K. S. Wilson, M. Bohlmann Kunz, K. Bera, M. Koble, R. R. Frontiera, P. J. Rossky, M. T. Zanni, & S. T. Roberts, “Structural Disorder at the Edges of Rubrene Crystals Enhances Singlet Fission” J. Phys. Chem. Lett. 14(50), 11497-505, (2023). Featured Editorial.
62. A. Stafford, S. R. Allen, L. Estergreen, K. Kafle, S. T. Roberts, & Z. A. Page, “Efficient Near Infrared Photopolymerizations using azaBODIPYs with Electron Donating Groups and Intramolecular Charge Transfer” Macromolecules. 56(23), 9804-10, (2023).
61. A. Stafford, S. R. Allen, T. A. Grusenmeyer, C. J. O’Dea, L. Estergreen, S. T. Roberts, & Z. A. Page, “Thiophene-fused Boron Dipyrromethenes as Energy Efficient Near-infrared Photocatalysts for Radical Polymerizations” J. Mater. Chem. A. 11, 22259-66, (2023).
60. J. K. Sowa, S. T. Roberts, & P. J. Rossky, “Exploring Configurations of Nanocrystal Ligands Using Machine-Learned Force Fields” J. Phys. Chem. Lett. 14(32), 7215–22, (2023).
59. N. Gross, C. T. Kuhs, B. Ostovar, W.-Y. Chiang, K. S. Wilson, T. S. Volek, Z. M. Faitz, C. C. Carlin, J. A. Dionne, M. T. Zanni, M. Gruebele, S. T. Roberts, S. Link, & C. F. Landes, “Progress and Prospects in Optical Ultrafast Microscopy: Transient Absorption and Two-Dimensional Spectroscopy” J. Phys. Chem. C. 127(30), 14557-86, (2023).
58. K. Wang, R. P. Cline, J. Schwan, J. M. Strain, S. T. Roberts, L. Mangolini, J. D. Eaves, & M. L. Tang, "Efficient Photon Upconversion Enabled by Strong Coupling Between Silicon Quantum Dots and Anthracene" Nat. Chem. 15, 1172-78, (2023), Press Release. Radio Story.
57. A. Uddin, S. R. Allen, A. K. Rylski, C. J. O’Dea, J. T. Ly, T. A. Grusenmyer, S. T. Roberts, & Z. A. Page, “Do the Twist: Efficient Heavy-Atom-Free Visible Light Polymerization Facilitated by Spin-Orbit Charge Transfer Intersystem Crossing” Angew. Chem. Int. Ed. (2023), 62, e202219140.
56. A. Al-Zubeidi, B. Ostovar, C. C. Carlin, B. C. Li, S. A. Lee, W.-Y. Chiang, N. Gross, S. Dutta, A. Misiura, E. K. Searles, A. Chakraborty, S. T. Roberts, J. A. Dionne, P. J. Rossky, C. F. Landes, & S. Link, “Mechanism for Plasmon-generated Solvated Electrons” Proc. Natl. Acc. Sci. U.S.A. 120(3), e2217035120, (2023). Press Release.
55. J. T. Boette, K. M. Daniel, J. W. Lietzke, S. M. Amorde, & S. T. Roberts, "Research-Focused Approach for Introducing Undergraduate Students to Aromatic Organic Synthesis at a Community College" J. Chem. Educ. 100(2), 572-80, (2023).
54. D. M. Cadena, J. K. Sowa, D. E. Cotton, C. D. Wight, C. L. Hoffman, H. R. Wagner, J. T. Boette, E. K. Raulerson, B. L. Iverson, P. J. Rossky, & S. T. Roberts, “Aggregation of Charge Acceptors on Nanocrystal Surfaces Alters Rates of Photoinduced Electron Transfer” J. Am. Chem. Soc. 144(49), 22676-88, (2022). Press Release.
53. V. Paulino, D. M. Cadena, K. Liu, A. Mukhopadhyay, S. T. Roberts, & J.-H. Olivier, “The Length of Molecular Tethers can be used to Control the Structure and Electronic Properties of Stapled Supramolecular Polymers” Chem. Mater. 34(14), 6518-28, (2022).
52. L. Estergreen, A. R. Mencke, D. E. Cotton, N. V. Korovina, J. Michl, S. T. Roberts, M. E. Thompson, & S. E. Bradforth, “Controlling Symmetry Breaking Charge Transfer in BODIPY Pairs” Acc. Chem. Resh. 55(11), 1561-72, (2022).
51. E. K. Raulerson, D. M. Cadena, M. A. Jabed, C. D. Wight, I. Lee, H. R. Wagner, J. T. Brewster, B. L. Iverson, S. Kilina, & S. T. Roberts, “Using Spectator Ligands to Enhance Nanocrystal-to-Molecule Electron Transfer” J. Phys. Chem. Lett. 13, 1416-23, (2022).
50. E. M. Rigsby, T. Miyashita, D. A. Fishman, S. T. Roberts, & M. L. Tang, “CdSe Nanocrystal Sensitized Photon Upconverting Film” RSC Adv., 11, 31042-46, (2021).
49. T. Huang, T. T. Koh, J. Schwan, T. Tran, P. Xia, K. Wang, L. Mangolini, M. L. Tang, & S. T. Roberts, “Bidirectional Triplet Exciton Transfer Between Silicon Nanocrystals and Perylene” Chem. Sci., 12, 6737-46,(2021).
48. D. E. Cotton & S. T. Roberts, “Sensitivity of Sum Frequency Generation Experimental Conditions to Thin Film Interference Effects” J. Chem. Phys., 154, 114704, (2021).
47. A. Stafford, D. Ahn, E. K. Raulerson, K.-Y. Chung, K. Sun, D. M. Cadena, E. M. Forrister, S. R. Yost, S. T. Roberts, & Z. A. Page, "Catalyst Halogenation Enables Rapid and Efficient Polymerizations with Visible to Far-Red Light" J. Am. Chem. Soc., 142(34), 14733-42, (2020).
46. B. R. Wygnant, G. T. Geberth, A. Z. Ye, A. Dolocan, D. E. Cotton, S. T. Roberts, D. A. Vanden Bout, & C. B. Mullins, “Moisture-Driven Formation and Growth of Quasi-2D Organolead Halide Perovskite Crystallites” ACS Appl. Energy Mater. 3(7), 6280-90, (2020).
45. D. E. Cotton, A. P. Moon, & S. T. Roberts, “Using Electronic Sum-Frequency Generation to Analyze the Interfacial Structure of Singlet Fission-Capable Perylenediimide Thin Films” J. Phys. Chem. C 124(21), 11401-13, (2020).
44. S. R. Suravarapu, S. P. Parvathaneni, J. A. Bender, S. T. Roberts, & M. J. Krische, "Benzannulation via Ruthenium(0)-Catalyzed Transfer Hydrogenative Cycloaddition: Precision Synthesis and Photophysical Characterization of Soluble Diindenoperylenes" Chem. Euro. J. 26(33), 7504-10, (2020).
43. M. A. Blemker, S. L. Gibbs, E. K. Raulerson, D. J. Milliron, & S. T. Roberts, “Modulation of the Visible Absorption and Reflection Profiles of ITO Nanocrystal Thin Films by Plasmon Excitation” ACS Photonics. 7(5), 1188-96, (2020).
42. T. T. Koh, T. Huang, J. Schwan, P. Xia, S. T. Roberts, L. Mangolini, & M. L. Tang, "Low Temperature Radical Initiated Hydrosilylation of Silicon Quantum Dots" Faraday Discuss., 222, 190-200, (2020).
41. P. Xia, E. K. Raulerson, D. Coleman, C. S. Gerke, L. Mangolini, M. L. Tang, & S. T. Roberts, "Achieving Spin-triplet Exciton Transfer between Silicon and Molecular Acceptors for Photon Upconversion" Nat. Chem. 12, 137-44, (2020). Press Release.
40. M. S. Azzaro, A. K. Le, H. Wang, & S. T. Roberts, "Ligand-Enhanced Energy Transport in Nanocrystal Solids Viewed with Two-Dimensional Electronic Spectroscopy" J. Phys. Chem. Lett. 10, 5602-08, (2019).
39. H. Sato, M. A. Blemker, G. Hellinghausen, D. W. Armstrong, J. W. Nafie, S. T. Roberts, & M. J. Krische, "Triple Helical Ir(ppy)3 Phenylene Cage Prepared via Diol-Mediated Benzannulation: Synthesis, Resolution, Absolute Stereochemistry and Photophysical Properties" Chem. Eur. J. 25(37), 8719-24, (2019).
38. Z. A. Kasun, H. Sato, J. Nie, Y. Mori, J. A. Bender, S. T. Roberts, & M. J. Krische, "Alternating oligo(o,p-Phenylenes) via Ruthenium Catalyzed Diol-Diene Benzannulation: Orthogonality to Cross-Coupling Enables De Novo Nanographene and PAH Construction" Chem. Sci., 9, 7866-73, (2018).
37. J. A. Bender, E. K. Raulerson, X. Li, T. Goldzak, P. Xia, T. Van Voorhis, M. L. Tang, & S. T. Roberts, "Surface States Mediate Triplet Energy Transfer in Nanocrystal-Acene Composite Systems" J. Am. Chem. Soc., 140(24), 7543-53, (2018).
36. M. S. Azzaro, A. Dodin, D. Y. Zhang, A. P. Willard, & S. T. Roberts, "Exciton-Delocalizing Ligands Can Speed Up Energy Migration in Nanocrystal Solids" Nano Letters, 18(5), 3259-70, (2018).
35. H. Sato, J. A. Bender, S. T. Roberts, & M. J. Krische, "Helical Rod-like Phenylene Cages via Ruthenium Catalyzed Diol-Diene Benzannulation: A Cord of Three Strands" J. Am. Chem. Soc. 140(7), 2455-59, (2018).
34. A. K. Le, J. A. Bender, D. H. Arias, D. E. Cotton, J. C. Johnson, & S. T. Roberts, "Singlet Fission Involves an Interplay Between Energetic Driving Force and Electronic Coupling in Perylenediimide Films" J. Am. Chem. Soc. 140(2), 814-26, (2018).
33. R. E. McAnally, J. A. Bender, L. Estergreen, R. Haiges, S. E. Bradforth, J. M. Dawlaty, S. T. Roberts, & A. S. Rury, “Defects Cause Tails in the Optical Spectra of a Crystalline Tetracene Derivative” J. Phys. Chem. Lett. 8, 5993–6001, (2017).
32. A. P. Moon, R. Pandey, J. A. Bender, D. E. Cotton, B. A. Renard, & S. T. Roberts, "Using Heterodyne-Detected Electronic Sum Frequency Generation to Probe the Electronic Structure of Buried Interfaces" J. Phys. Chem. C. 121(34), 18653-64, (2017).
31. R. W. Johns, M. A. Blemker, M. S. Azzaro, S. Heo, E. L. Runnerstrom, D. J. Milliron, & S. T. Roberts, "Charge Carrier Concentration Dependence of Ultrafast Plasmonic Relaxation in Conducting Metal Oxide Nanocrystals" J. Mater. Chem. C. 5, 5757-63, (2017).
30. M. S. Azzaro, M. C. Babin, S. K. Stauffer, G. Henkelman, & S. T. Roberts, "Can Exciton-delocalizing Ligands Facilitate Hot Hole Transfer from Semiconductor Nanocrystals?" J. Phys. Chem. C. 120(49), 28224-34, (2016).
29. A. K. Le, J. A. Bender, & S. T. Roberts, "Slow Singlet Fission Observed in a Perylenediimide Thin Film" J. Phys. Chem. Lett. 7, 4922-28, (2016).
28. R. Pandey, A. P. Moon, J. A. Bender, & S. T. Roberts, "Extracting the density of states of copper phthalocyanine at the SiO2 interface with electronic sum frequency generation" J. Phys. Chem. Lett. 7(6), 1060-66, (2016).
27. S. T. Roberts, "Energy transport: Singlet to triplet and back again" Nat. Chem. 7, 764-765, (2015).
Based on work done prior to moving to UT Austin
26. S. T. Roberts, A. Mandal, & A. Tokmakoff, “Local and collective reaction coordinates in the transport of the aqueous hydroxide ion” J. Phys. Chem. B. 118(28), 8062-69, (2014).
25. S. Das, P. P. Khlyabich, B. Burkhart, S. T. Roberts, E. Couderc, B. C. Thompson, & S. E. Bradforth, “Quantifying charge recombination in solar cells based on donor-acceptor P3HT analogs” J. Phys. Chem. C. 118, 6650-60, (2014).
24. R. Sarkissian, S. T. Roberts, T.-W. Yeh, S. Das, S. E. Bradforth, J. O’Brien, & P. D. Dapkus, “Photon quenching in InGaN quantum well light emitting devices” Appl. Phys. Lett. 103, 041123, (2013).
23. J. N. Mastron, S. T. Roberts, R. E. McAnally, M. E. Thompson, & S. E. Bradforth, “Aqueous colloidal acene nanoparticles: A new platform for studying singlet fission” J. Phys. Chem. B. 117(49), 15519-26, (2013).
22. P. Dhar, P. P. Khlyabich, B. Burkhart, S. T. Roberts, S. S. Malyk, B. C. Thompson, & A. V. Benderskii, “Annealing induced changes in the molecular orientation of poly-3-hexylthiophene at buried interfaces” J. Phys. Chem. C. 117(29), 15213-20, (2013).
21. Q. Zhong, V. V. Diev, S. T. Roberts, S. E. Bradforth, & M. E. Thompson, “Fused porphyrin-single walled carbon nanotube hybrids: Efficient formation and photophysical characterization” ACS Nano. 7(4), 3466-75, (2013).
20. S. T. Roberts, R. E. McAnally, J. N. Mastron, D. H. Webber, M. T. Whited, R. L. Brutchey, M. E. Thompson, & S. E. Bradforth, “Efficient singlet fission discovered in a disordered acene film” J. Am. Chem. Soc. 134(14), 6388-400, (2012).
19. M. T. Whited, N. M. Patel, S. T. Roberts, P. I. Djurovich, S. E. Bradforth, & M. E. Thompson, “Symmetry-breaking intramolecular charge transfer in the excited state of meso-linked BODIPY dyads” Chem. Commun. 48, 284-86, (2012).
18. S. T. Roberts, C. W. Schlenker, V. Barlier, R. E. McAnally, Y. Zhang, J. N. Mastron, M. E. Thompson, and S. E. Bradforth, “Observation of triplet exciton formation in a platinum sensitized organic photovoltaic device” J. Phys. Chem. Lett. 2(2), 49-54, (2011).
17. K. Ramasesha, S. T. Roberts, R. A. Nicodemus, A. Mandal, & A. Tokmakoff, ”Ultrafast 2D IR anisotropy of water reveals reorientation during hydrogen-bond switching" J. Chem. Phys. 135, 054509, (2011).
16. S. T. Roberts, K. Ramasesha, P. B. Petersen, A. Mandal, and A. Tokmakoff, “Proton transfer in concentrated aqueous hydroxide visualized using ultrafast infrared spectroscopy” J. Phys. Chem. A. 115(16), 3957-72, (2011).
15. M. T. Whited, P. I. Djurovich, S. T. Roberts, A. C. Durrell, C. W. Schlenker, S. E. Bradforth, and M. E. Thompson, “Singlet and triplet excitation management in a bichromophoric near-infrared-phosphorescent BODIPY-benzoporphyrin platinum complex” J. Am. Chem. Soc. 133(1), 88-96 (2011).
14. S. T. Roberts, J. J. Loparo, K. Ramasesha, and A. Tokmakoff, “A fast-scanning Fourier transform 2D IR interferometer” Opt. Commun. 284, 1062-66, (2011).
13. R. A. Nicodemus, K. Ramasesha, S. T. Roberts, and A. Tokmakoff, “Hydrogen bond rearrangements in water probed with temperature-dependent 2D IR” J. Phys. Chem. Lett. 1(7), 1068-72, (2010).
12. S. T. Roberts, P. B. Petersen, K. Ramasesha, A. Tokmakoff, I. S. Ufimtsev, and T. J. Martinez, “Observation of a Zundel-like transition state during proton transfer in aqueous hydroxide” Proc. Natl. Acc. Sci. U.S.A. 106(36), 15154-59, (2009).
11. S. T. Roberts, K. Ramasesha, and A. Tokmakoff, “Structural rearrangements in water viewed through two-dimensional infrared spectroscopy” Acc. Chem. Resh. 42(9), 1239-49, (2009).
10. P. B. Petersen, S. T. Roberts, K. Ramasesha, D. G. Nocera, and A. Tokmakoff, “Ultrafast N-H vibrational dynamics of cyclic doubly hydrogen-bonded homo- and heterodimers” J. Phys. Chem. B. 112, 13167-71, (2008).
9. J. J. Loparo, S. T. Roberts, R. A. Nicodemus, and A. Tokmakoff, “Variation of the transition dipole moment across the OH stretching band of water” Chem. Phys. 341(1-3), 218-29 (2007).
8. J. R. Schmidt, S. T. Roberts, J. J. Loparo, A. Tokmakoff, M. D. Fayer, and J. L. Skinner, “Are water simulation models consistent with steady-state and ultrafast vibrational spectroscopy experiments?” Chem. Phys. 341(1-3), 143-57, (2007).
7. A. D. Smith, C. K.-F. Shen, S. T. Roberts, R. Helgeson, and B. J. Schwartz, “Ionic strength and solvent control over the physical structure, electronic properties and superquenching of conjugated polyelectrolytes” Res. Chem. Intermed. 33(1-2), 125-42, (2007).
6. S. T. Roberts, J. J. Loparo, and A. Tokmakoff, “Characterization of spectral diffusion from two-dimensional line shapes” J. Chem. Phys. 125, 084502 (2006).
5. J. J. Loparo, S. T. Roberts, and A. Tokmakoff, “Multidimensional infrared spectroscopy of water. I. Vibrational dynamics in two-dimensional IR line shapes” J. Chem. Phys. 125, 194521, (2006).
4. J. J. Loparo, S. T. Roberts, and A. Tokmakoff, “Multidimensional infrared spectroscopy of water. II. Hydrogen bond switching dynamics” J. Chem. Phys. 125, 194522, (2006).
3. J. D. Eaves, J. J. Loparo, C. J. Fecko, S. T. Roberts, A. Tokmakoff, and P. L. Geissler, “Hydrogen bonds in liquid water are broken only fleetingly” Proc. Natl. Acc. Sci. U.S.A. 102(37) 13019-22. (2005).
2. C. J. Fecko, J. J. Loparo, S. T. Roberts, and A. Tokmakoff, “Local hydrogen bonding dynamics and collective reorganization in water: Ultrafast infrared spectroscopy of HOD/D2O” J. Chem. Phys. 122, 054506 (2005).
1. J. J. Loparo, C. J. Fecko, J. D. Eaves, S. T. Roberts, and A. Tokmakoff, “Reorientational and configurational fluctuations in water observed on molecular length scales” Phys. Rev. B. 70, 180201(R), (2004).