Papanikolas Group
Ultrafast Spectroscopy and Ultrafast Microscopy
Papanikolas Group
Ultrafast Spectroscopy and Ultrafast Microscopy
Explore Our Publications
Collection of papers on selected topics. PDF files are book-marked for easy navigation
Ultrafast Microscopy
Visualization of Carrier Dynamcis in Silicon Nanowires
ZnO - Carrier Dynamics and Optical Resonator Modes
Solar Fuels
Light-Harvesting Polymers and Peptides
Interfacial Dynamics
Molecular Excited States (ILET, Light-switch, etc.)
Publications
84. Byron H. Farnum, Zach A. Morseth, M. Kyle Brennaman, John M. Papanikolas and Thomas J.
Meyer, "Application of Degenerately Doped Metal Oxides in the Study of Photoinduced
Interfacial Electron Transfer", J. Phys. Chem. B, 2015, Submitted.
83. M. Kyle Brennman, Michael R. Norris, Robert A. Binstead, Robert J. Brown, Wnjing Song, Leila Alibabaei, Javier J. Concepcion, Melissa K. Gish, Joseph L. Templeton, John M. Papanikolas and Thomas J. Meyer, "The Roles of Injection and Cross-Surface Dynamics in a Ruthenium-Based Chromophore-Catalyst Assembly on TiO2", J. Am. Chem. Soc., 2015, Submitted.
82. Zachary A. Morseth, Li Wang, Egle Puodziukynaite, Gyu Leem, Alexander T. Gilligan, Thomas J. Meyer Kirk S. Schanze, John R. Reynolds and John M. Papanikolas, "Ultrafast Dynamics in Multifunctional Ru(II)-Loaded Polymers for Solar Energy Conversion", Acc. Chem. Res., 2015, Available Online.
81. Michelle M. Gabriel, Erik M. Grumstrup, Justin R. Kirschbrown, Christopher W. Pinion, Joseph D. Christesen, David F. Zigler, Emma E. M. Cating, James F. Cahoon and John M. Papanikolas, "Visualization of Charge Carrier Motion in Semiconductor Nanowires with Ultrafast Pump-Probe Microscopy" in Ultrafast Phenomena 2015, edited by K. Yamanouchi, S. Cundiff, R. de Vivie- Riedle, M. Kuwata-Gonokami, L. DiMauro, L. (Proceedings of the 19th International Conference, Springer) 2015, 671-675. [Conference Proceedings]
80. Dennis L. Ashford, M. Kyle Brennaman, Robert J. Brown, Shahar Keinan, Javier J. Conception, John M. Papanikolas, Joseph L. Templeton, and Thomas J. Meyer, "Varying the Electronic Structure of Surface Bound Ruthenium(II) Polypyridyl Complexes", Inorg. Chem., 54, 2015, 460-469.
79. Gyu Leem, Zachary A. Morseth, Egle Puodziukynaite, Junlin Jiang, Fang Zhen, Alexander Gilligan, John R. Reynolds, John M. Papanikolas, and Kirk S. Schanze, "Light-Harvesting and Charge Separation in a pi-Conjugated Antenna Polymer Bound to TiO2", J. Phys. Chem. C, 118, 2014, 28535-28541.
78. Byron H. Farnum, Zach A. Morseth, M. Kyle Brennaman, John M. Papanikolas and Thomas J. Meyer, "Driving Force Dependent, Photo-induced Electron Transfer at Degenerately Doped, Optically Transparent Semiconductor Nano-particle Interfaces", J. Am. Chem. Soc., 136, 2014, 15869-15872.
77. Erik M. Grumstrup, Michelle M. Gabriel, Christopher W. Pinion, James K. Parker, James F. Cahoon and John M. Papanikolas, "Reversible Strain-Induced Electron-Hole Recombination in Silicon Nanowires Observed with Femtosecond Pump-Probe Microscopy", Nano Letters, 14, 2014, 6287-6292.
76. Michelle M. Gabriel, Erik M. Grumstrup, Justin R. Kirschbrown, Christopher W. Pinion, Joseph D. Christesen, David F. Zigler, Emma E. M. Cating, James F. Cahoon and John M. Papanikolas, "Imaging Charge Separation and Carrier Recombination in Nanowire p-n Junctions Using Ultrafast Microscopy", Nano Letters, 14, 2014, 3079-3087.
75. Erik M. Grumstrup, Michelle M. Gabriel, Emma M. Cating, Christopher W. Pinion, Joseph D. Christesen, Justin R. Kirschbrown, Ernest L. Vallorz, III, James F. Cahoon and John M. Papanikolas, "Ultrafast Carrier Dynamics in Individual Silicon Nanowires: Characterization of Diameter- Dependent Carrier Lifetime and Surface Recombination with Pump-Probe Microscopy", J. Phys. Chem. C, 118, 2014, 8634-8640.
74. Erik M. Grumstrup, Emma M. Cating, Michelle M. Gabrielle, Christopher W. Pinion, Joseph D. Christesen, Justin R. Kirschbrown, Ernest L. Vallorz, III, James F. Cahoon and John M. Papanikolas, "Ultrafast Carrier Dynamics of Silicon Nanowire Ensembles: The Impact of Geometrical Heterogeneity on Charge Carrier Lifetime", J. Phys. Chem. C, 118, 2014, 8626-8633.
73. Stephanie E. Bettis, Kenneth Hanson, Li Wang, Melissa K. Gish, Javier J. Concepcion, Zhen Fang, Thomas J. Meyer and John M. Papanikolas, "Photophysical characterization of chromophore/water oxidation catalyst containing layer-by-layer assembly on nanocrystalline TiO2 using ultrafast spectroscopy", J. Phys. Chem. A, 118, 2014, 10301- 10308.
72. Egle Puodziukynaite, Li Wang, Kirk S. Schanze, John M. Papanikolas and John R. Reynolds, "Poly(Fluorene-co-Thiophene)-Based Ionic Transition-Metal Complex Polymers for Solar Energy Harvesting and Storage Applications", Polymer Chemistry, 5, 2014, 2363- 2369.
71. Stephanie E. Bettis, Derek M. Ryan, Melissa K. Gish, Leila Alibabaei, Thomas J. Meyer, Marcey L. Waters, John M. Papanikolas, "Photophysical Characterization of a Helical Peptide Chromophore–Water Oxidation Catalyst Assembly on a Semiconductor Surface Using Ultrafast Spectroscopy", J. Phys. Chem. C, 118, 2014, 6029-6037.
70. Byron H. Farnum, Zachary A. Morseth, Alexander M. Lapides, Adam J. Rieth, Paul G. Hoertz, M. Kyle Brennaman, John M. Papanikolas, Thomas J. Meyer, "Photo-induced Interfacial Electron Transfer within a Mesoporous Transparent Conducting Oxide Film", J. Am. Chem. Soc., 136, 2014, 2208-2211.
69. Zhuo Chen, Erik M. Grumstrup, Alexander T. Gilligan, John M. Papanikolas, Kirk S. Schanze, "Light Harvesting Polymers: Ultrafast Energy Transfer in Polystyrene Based Arrays of p- Conjugated Chromophores", J. Phys. Chem. B, 118, 2014, 372-378.
68. Li Wang, Dennis L. Ashford, David W. Thompson, Thomas J. Meyer, and John M. Papanikolas, "Watching Photoactivation in a Ru(II) Chromophore-Catalyst Assembly on TiO2 by Ultrafast Spectroscopy", J. Phys. Chem. C, 117, 2013, 24250-24258.
67. Joseph D. Christesen, Christopher W. Pinion, Erik M. Grumstrup, John M. Papanikolas and James F. Cahoon, "Synthetically Encoding High-Resolution Shapes in Silicon Nanowires for Photonics", Nano Letters, 13, 2013, 6281-6286.
66. Li Wang, Egle Puodziukynaite, Erik M. Grumstrup, Aaron C. Brown, Shahar Keinan, Kirk S. Schanze, John R. Reynolds, and John M. Papanikolas, "Ultrafast Formation of a Long-Lived Charge-Separated State in a Ru-loaded Poly(3-hexylthiophene) Light-harvesting Polymer", J. Phys. Chem. Lett., 4, 2013, 2269-2273.
65. Erik M. Grumstrup, Zhuo Chen, Ryan P. Vary, Andrew M. Moan, Kirk S. Schanze, John M. Papanikolas, "Frequency Modulated Femtosecond Stimulated Raman Spectroscopy (FM-FSRS) of Ultrafast Energy Transfer in a Donor-Acceptor Co-Polymer", J. Phys. Chem. B, 117, 2013, 8245-8255.
64. Zach E. Lampert, C. Lewis Reynolds Jr, John M. Papanikolas, and Mohamed Aboelfotoh, "Morphology and Chain Aggregation Dependence of Optical Gain in Thermally Annealed Films of the Conjugated Polymer poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene]", J. App. Phys, 113, 2013, 233509.
63. Zach E. Lampert , Simon E. Lappi, John M. Papanikolas, C. Lewis Reynolds Jr., "Intrinsic Optical Gain in Thin Films of a Conjugated Polymer Under Picosecond Excitation", Appl. Phys. Lett., 103, 2013, 033303.
62. Jiaxing Lin, Xiangqian Hu, Peng Zhang, Andre Van Rynbach, David N. Beratan, Caleb A. Kent, Brian P. Mehl, John M. Papanikolas, Thomas J. Meyer, Wenbin Lin, Spiros S. Skourtis and Marios Constantinou, "Triplet Excitation Energy Dynamics in Metal-Organic Frameworks", J. Phys. Chem. C, 117, 2013, 22250-22259.
61. Justin R. Kirschbrown, Ralph L. House, Brian P. Mehl, James K. Parker and John M. Papanikolas, "Hybrid Standing Wave and Whispering Gallery Modes in Needle-Shaped ZnO Rods as Studied by Two-Photon Emission Microscopy and Finite Difference Frequency Domain Methods", J. Phys. Chem. C, 117, 2013, 10653-10660.
60. Michelle M. Gabriel, Justin R. Kirschbrown, Joseph D. Christesen, Christopher W. Pinion, David F. Zigler, Erik M. Grumstrup, Brian P. Mehl, Emma E. M. Cating, James F. Cahoon and John M. Papanikolas, "Direct Imaging of Free Carrier and Trap Carrier Motion in Silicon Nanowires by Spatially-Separated Femtosecond Pump-Probe Microscopy", Nano Lett., 13, 2013, 1336-1340.
59. Matthew K. Brennaman, Cavan N. Fleming, Cheryl A. Slate, Scafford A. Serron, Stephanie E. Bettis, John M. Papanikolas and Thomas J. Meyer, "Distance Dependence of Intra-Helix RuII* to OsII Polypyridyl Excited State Energy Transfer in Oligoproline Assemblies", J. Phys. Chem. B, 117, 2013, 6352-6363.
58. Zach E. Lampert, John M. Papanikolas and C. Lewis Reynolds, Jr., "Enhancement of Optical Gain and Amplified Spontaneous Emission Due to Waveguide Geometry in the Conjugated Polymer poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene]", App. Phys. Lett., 102, 2013, 073303.
57. Brian P. Mehl, Justin R Kirschbrown, Michelle M. Gabriel, Ralph L. House and John M. Papanikolas, "Pump-Probe Microscopy: Spatially Resolved Carrier Dynamics in ZnO Rods and the Influence of Optical Cavity Resonator Modes", J. Phys. Chem. B, 117, 2013, 4390-4398.
56. Kenneth Hanson, Dale J. Wilger, Sean T. Jones, Daniel P. Harrison, Stephanie E. Bettis, Hanlin Luo, John M. Papanikolas, Marcey L. Waters and Thomas J. Meyer, "Electron Transfer Dynamics of Peptide-Derivatized RuII-polypyridyl Complexes on Nanocrystalline Metal Oxide Films", Biopolymers: Peptide Science, 100, 2013, 25-37.
55. Da Ma, Stephanie E. Bettis, Kenneth Hanson, Maria Minakova, Leila Alibabaei, William Fondrie, Derek M. Ryan, Garegin A. Papoian, Thomas J. Meyer, Marcey L. Waters and John M. Papanikolas, "Interfacial Energy Conversion in RuII Polypyridyl-Derivatized Oligoproline Assemblies on TiO2", J. Am. Chem. Soc., 135, 2013, 5250-5253.
83. M. Kyle Brennman, Michael R. Norris, Robert A. Binstead, Robert J. Brown, Wnjing Song, Leila Alibabaei, Javier J. Concepcion, Melissa K. Gish, Joseph L. Templeton, John M. Papanikolas and Thomas J. Meyer, "The Roles of Injection and Cross-Surface Dynamics in a Ruthenium-Based Chromophore-Catalyst Assembly on TiO2", J. Am. Chem. Soc., 2015, Submitted.
82. Zachary A. Morseth, Li Wang, Egle Puodziukynaite, Gyu Leem, Alexander T. Gilligan, Thomas J. Meyer Kirk S. Schanze, John R. Reynolds and John M. Papanikolas, "Ultrafast Dynamics in Multifunctional Ru(II)-Loaded Polymers for Solar Energy Conversion", Acc. Chem. Res., 2015, Available Online.
81. Michelle M. Gabriel, Erik M. Grumstrup, Justin R. Kirschbrown, Christopher W. Pinion, Joseph D. Christesen, David F. Zigler, Emma E. M. Cating, James F. Cahoon and John M. Papanikolas, "Visualization of Charge Carrier Motion in Semiconductor Nanowires with Ultrafast Pump-Probe Microscopy" in Ultrafast Phenomena 2015, edited by K. Yamanouchi, S. Cundiff, R. de Vivie- Riedle, M. Kuwata-Gonokami, L. DiMauro, L. (Proceedings of the 19th International Conference, Springer) 2015, 671-675. [Conference Proceedings]
80. Dennis L. Ashford, M. Kyle Brennaman, Robert J. Brown, Shahar Keinan, Javier J. Conception, John M. Papanikolas, Joseph L. Templeton, and Thomas J. Meyer, "Varying the Electronic Structure of Surface Bound Ruthenium(II) Polypyridyl Complexes", Inorg. Chem., 54, 2015, 460-469.
79. Gyu Leem, Zachary A. Morseth, Egle Puodziukynaite, Junlin Jiang, Fang Zhen, Alexander Gilligan, John R. Reynolds, John M. Papanikolas, and Kirk S. Schanze, "Light-Harvesting and Charge Separation in a pi-Conjugated Antenna Polymer Bound to TiO2", J. Phys. Chem. C, 118, 2014, 28535-28541.
78. Byron H. Farnum, Zach A. Morseth, M. Kyle Brennaman, John M. Papanikolas and Thomas J. Meyer, "Driving Force Dependent, Photo-induced Electron Transfer at Degenerately Doped, Optically Transparent Semiconductor Nano-particle Interfaces", J. Am. Chem. Soc., 136, 2014, 15869-15872.
77. Erik M. Grumstrup, Michelle M. Gabriel, Christopher W. Pinion, James K. Parker, James F. Cahoon and John M. Papanikolas, "Reversible Strain-Induced Electron-Hole Recombination in Silicon Nanowires Observed with Femtosecond Pump-Probe Microscopy", Nano Letters, 14, 2014, 6287-6292.
76. Michelle M. Gabriel, Erik M. Grumstrup, Justin R. Kirschbrown, Christopher W. Pinion, Joseph D. Christesen, David F. Zigler, Emma E. M. Cating, James F. Cahoon and John M. Papanikolas, "Imaging Charge Separation and Carrier Recombination in Nanowire p-n Junctions Using Ultrafast Microscopy", Nano Letters, 14, 2014, 3079-3087.
75. Erik M. Grumstrup, Michelle M. Gabriel, Emma M. Cating, Christopher W. Pinion, Joseph D. Christesen, Justin R. Kirschbrown, Ernest L. Vallorz, III, James F. Cahoon and John M. Papanikolas, "Ultrafast Carrier Dynamics in Individual Silicon Nanowires: Characterization of Diameter- Dependent Carrier Lifetime and Surface Recombination with Pump-Probe Microscopy", J. Phys. Chem. C, 118, 2014, 8634-8640.
74. Erik M. Grumstrup, Emma M. Cating, Michelle M. Gabrielle, Christopher W. Pinion, Joseph D. Christesen, Justin R. Kirschbrown, Ernest L. Vallorz, III, James F. Cahoon and John M. Papanikolas, "Ultrafast Carrier Dynamics of Silicon Nanowire Ensembles: The Impact of Geometrical Heterogeneity on Charge Carrier Lifetime", J. Phys. Chem. C, 118, 2014, 8626-8633.
73. Stephanie E. Bettis, Kenneth Hanson, Li Wang, Melissa K. Gish, Javier J. Concepcion, Zhen Fang, Thomas J. Meyer and John M. Papanikolas, "Photophysical characterization of chromophore/water oxidation catalyst containing layer-by-layer assembly on nanocrystalline TiO2 using ultrafast spectroscopy", J. Phys. Chem. A, 118, 2014, 10301- 10308.
72. Egle Puodziukynaite, Li Wang, Kirk S. Schanze, John M. Papanikolas and John R. Reynolds, "Poly(Fluorene-co-Thiophene)-Based Ionic Transition-Metal Complex Polymers for Solar Energy Harvesting and Storage Applications", Polymer Chemistry, 5, 2014, 2363- 2369.
71. Stephanie E. Bettis, Derek M. Ryan, Melissa K. Gish, Leila Alibabaei, Thomas J. Meyer, Marcey L. Waters, John M. Papanikolas, "Photophysical Characterization of a Helical Peptide Chromophore–Water Oxidation Catalyst Assembly on a Semiconductor Surface Using Ultrafast Spectroscopy", J. Phys. Chem. C, 118, 2014, 6029-6037.
70. Byron H. Farnum, Zachary A. Morseth, Alexander M. Lapides, Adam J. Rieth, Paul G. Hoertz, M. Kyle Brennaman, John M. Papanikolas, Thomas J. Meyer, "Photo-induced Interfacial Electron Transfer within a Mesoporous Transparent Conducting Oxide Film", J. Am. Chem. Soc., 136, 2014, 2208-2211.
69. Zhuo Chen, Erik M. Grumstrup, Alexander T. Gilligan, John M. Papanikolas, Kirk S. Schanze, "Light Harvesting Polymers: Ultrafast Energy Transfer in Polystyrene Based Arrays of p- Conjugated Chromophores", J. Phys. Chem. B, 118, 2014, 372-378.
68. Li Wang, Dennis L. Ashford, David W. Thompson, Thomas J. Meyer, and John M. Papanikolas, "Watching Photoactivation in a Ru(II) Chromophore-Catalyst Assembly on TiO2 by Ultrafast Spectroscopy", J. Phys. Chem. C, 117, 2013, 24250-24258.
67. Joseph D. Christesen, Christopher W. Pinion, Erik M. Grumstrup, John M. Papanikolas and James F. Cahoon, "Synthetically Encoding High-Resolution Shapes in Silicon Nanowires for Photonics", Nano Letters, 13, 2013, 6281-6286.
66. Li Wang, Egle Puodziukynaite, Erik M. Grumstrup, Aaron C. Brown, Shahar Keinan, Kirk S. Schanze, John R. Reynolds, and John M. Papanikolas, "Ultrafast Formation of a Long-Lived Charge-Separated State in a Ru-loaded Poly(3-hexylthiophene) Light-harvesting Polymer", J. Phys. Chem. Lett., 4, 2013, 2269-2273.
65. Erik M. Grumstrup, Zhuo Chen, Ryan P. Vary, Andrew M. Moan, Kirk S. Schanze, John M. Papanikolas, "Frequency Modulated Femtosecond Stimulated Raman Spectroscopy (FM-FSRS) of Ultrafast Energy Transfer in a Donor-Acceptor Co-Polymer", J. Phys. Chem. B, 117, 2013, 8245-8255.
64. Zach E. Lampert, C. Lewis Reynolds Jr, John M. Papanikolas, and Mohamed Aboelfotoh, "Morphology and Chain Aggregation Dependence of Optical Gain in Thermally Annealed Films of the Conjugated Polymer poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylenevinylene]", J. App. Phys, 113, 2013, 233509.
63. Zach E. Lampert , Simon E. Lappi, John M. Papanikolas, C. Lewis Reynolds Jr., "Intrinsic Optical Gain in Thin Films of a Conjugated Polymer Under Picosecond Excitation", Appl. Phys. Lett., 103, 2013, 033303.
62. Jiaxing Lin, Xiangqian Hu, Peng Zhang, Andre Van Rynbach, David N. Beratan, Caleb A. Kent, Brian P. Mehl, John M. Papanikolas, Thomas J. Meyer, Wenbin Lin, Spiros S. Skourtis and Marios Constantinou, "Triplet Excitation Energy Dynamics in Metal-Organic Frameworks", J. Phys. Chem. C, 117, 2013, 22250-22259.
61. Justin R. Kirschbrown, Ralph L. House, Brian P. Mehl, James K. Parker and John M. Papanikolas, "Hybrid Standing Wave and Whispering Gallery Modes in Needle-Shaped ZnO Rods as Studied by Two-Photon Emission Microscopy and Finite Difference Frequency Domain Methods", J. Phys. Chem. C, 117, 2013, 10653-10660.
60. Michelle M. Gabriel, Justin R. Kirschbrown, Joseph D. Christesen, Christopher W. Pinion, David F. Zigler, Erik M. Grumstrup, Brian P. Mehl, Emma E. M. Cating, James F. Cahoon and John M. Papanikolas, "Direct Imaging of Free Carrier and Trap Carrier Motion in Silicon Nanowires by Spatially-Separated Femtosecond Pump-Probe Microscopy", Nano Lett., 13, 2013, 1336-1340.
59. Matthew K. Brennaman, Cavan N. Fleming, Cheryl A. Slate, Scafford A. Serron, Stephanie E. Bettis, John M. Papanikolas and Thomas J. Meyer, "Distance Dependence of Intra-Helix RuII* to OsII Polypyridyl Excited State Energy Transfer in Oligoproline Assemblies", J. Phys. Chem. B, 117, 2013, 6352-6363.
58. Zach E. Lampert, John M. Papanikolas and C. Lewis Reynolds, Jr., "Enhancement of Optical Gain and Amplified Spontaneous Emission Due to Waveguide Geometry in the Conjugated Polymer poly[2-methoxy-5-(2'-ethylhexyloxy)-p-phenylene vinylene]", App. Phys. Lett., 102, 2013, 073303.
57. Brian P. Mehl, Justin R Kirschbrown, Michelle M. Gabriel, Ralph L. House and John M. Papanikolas, "Pump-Probe Microscopy: Spatially Resolved Carrier Dynamics in ZnO Rods and the Influence of Optical Cavity Resonator Modes", J. Phys. Chem. B, 117, 2013, 4390-4398.
56. Kenneth Hanson, Dale J. Wilger, Sean T. Jones, Daniel P. Harrison, Stephanie E. Bettis, Hanlin Luo, John M. Papanikolas, Marcey L. Waters and Thomas J. Meyer, "Electron Transfer Dynamics of Peptide-Derivatized RuII-polypyridyl Complexes on Nanocrystalline Metal Oxide Films", Biopolymers: Peptide Science, 100, 2013, 25-37.
55. Da Ma, Stephanie E. Bettis, Kenneth Hanson, Maria Minakova, Leila Alibabaei, William Fondrie, Derek M. Ryan, Garegin A. Papoian, Thomas J. Meyer, Marcey L. Waters and John M. Papanikolas, "Interfacial Energy Conversion in RuII Polypyridyl-Derivatized Oligoproline Assemblies on TiO2", J. Am. Chem. Soc., 135, 2013, 5250-5253.
Papanikolas Group
Department of Chemistry
University of North Carolina at Chapel Hill