Publications

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Chang, Y.-L., Palacios, R.E., Fan, F.-R., Bard, A.J., Barbara, P.F., Electrogenerated chemiluminescence of single conjugated polymer nanoparticles. Journal American Chemical Society (Communication), in press.

Chang, W.-S., Link, S., Yethiraj, A., Barbara, P.F., Single molecule spectroscopy of conjugated polymer chains in an electric field-aligned liquid crystal. Journal of Physical Chemistry B, 112 448 (2008)

Palacios, R.E., Fan, F.-R., Grey, J.K., Suk, J., Bard, A.J., Barbara, P.F., Charging and discharging of single conjugated-polymer nanoparticles. Nature Materials, 6(9), 680 (2007)

Palacios, R.E. and Barbara, P.F., Single molecule spectroscopy of poly 3-octyl-thiophene (P3OT). Journal of Fluorescence, 17(6), 749 (2007)

Park, S.-J., Link, S., Miller, W. L., Gesquiere, A., Barbara, P. F. Effect of electric field on the
photoluminescence intensity of single CdSe nanocrystals. Chemical Physics 341, 169-174 (2007)

Zeng, YN, Liu, H.-W., Landes C. F., Kim, YJ, Ma, X, Zhu, Y., Musier-Forsyth, Barbara, P. F., Probing nucleation, reverse annealing, and chaperone function along the reaction path of HIV-1 single-strand transfer. Proceedings from the National Academy of Science, 104, 12651 (2007)

Landes, C. F., Aeng, Y., Liu, H.-W., Musier-Forsyth, K., Barbara, P. F., Single-molecule study of the inhibition of HIV-1 transactivation response region DNA/DNA annealing by argininamide. Journal of the American Chemical Society 129, 10181 (2007)

Barbara, P. F., Chang, W.-S., Link, S., Scholes, G. D., Yethiraj, A., Structure and dynamics of conjugated polymers in liquid crystalline solvents. Annual Review of Physical Chemistry 58, 565 (2007)

Liu, H.-W., Zeng YN, Landes, C. F., Kim, Y. J., Zhu, Y., Ma, X., Vo, M.-N., Musier-Forsyth, K., Barbara, P. F., Insights on the role of nucleic acid/protein interactions in chaperoned nucleic acid rearrangements of HIV-1 reverse transcription. Proceedings of the National Academy of Science, 104, 5261 (2007)

Grey, J. K., Kim, D. Y., Norris, N. C., Miller, W. L., Barbara, P. F. Size-dependent spectroscopic properties of conjugated polymer nanoparticles. Journal of Physical Chemistry B, 110, 25568 (2006).

Palacios, R. E., Fan, F.-R. F., Bard, A. J. & Barbara, P. F. Single-Molecule Spectroelectrochemistry (SMS-EC). Journal of the American Chemical Society 128, 9028-9029 (2006).

Link, S., Chang, W.-S., Yethiraj, A. & Barbara, P. F. Orthogonal Orientations for Solvation of Polymer Molecules in Smectic Solvents. Physical Review Letters 96, 017801/1-017801/4 (2006).

Link, S., Chang, W.-S., Yethiraj, A. & Barbara, P. F. Anisotropic Diffusion of Elongated and Aligned Polymer Chains In a Nematic Solvent. Journal of Physical Chemistry B 110, 19799-19803 (2006).

Lee, Y. J., Kim, D. Y. & Barbara, P. F. Effect of Sample Preparation and Excitation Conditions on the Single Molecule Spectroscopy of Conjugated Polymers. Journal of Physical Chemistry B 110, 9739-9742 (2006).

Kim, D. Y., Grey, J. K. & Barbara, P. F. A detailed single molecule spectroscopy study of the vibronic states and energy transfer pathways of the conjugated polymer MEH-PPV. Synthetic Metals 156, 336-345 (2006).

Grey, J. K. et al. Effect of Temperature and Chain Length on the Bimodal Emission Properties of Single Polyfluorene Copolymer Molecules. Journal of Physical Chemistry B 110, 18898-18903 (2006).

Zhang, T., Lee, Y. J., Kee, T. W. & Barbara, P. F. The mechanism of electron-cation geminate recombination in liquid isooctane. Chemical Physics Letters 403, 257-261 (2005).

Yu, J., Lammi, R., Gesquiere, A. J. & Barbara, P. F. Singlet-Triplet and Triplet-Triplet Interactions in Conjugated Polymer Single Molecules. Journal of Physical Chemistry B 109, 10025-10034 (2005).

Link, S., Hu, D., Chang, W. S., Scholes, G. D. & Barbara, P. F. Nematic Solvation of Segmented Polymer Chains. Nano Letters 5, 1757-1760 (2005).

Lee, Y. J., Park, S.-J., Gesquiere, A. J. & Barbara, P. F. Probing a molecular interface in a functioning organic diode. Applied Physics Letters 87, 051906/1-051906/3 (2005).

Lee, Y. J., Kim, D. Y., Grey, J. K. & Barbara, P. F. Variable temperature single-molecule dynamics of MEH-PPV. ChemPhysChem 6, 2404-2409 (2005).

Lammi, R. K. & Barbara, P. F. Influence of chain length on exciton migration to low-energy sites in single fluorene copolymers. Photochemical & Photobiological Sciences 4, 95-99 (2005).

Grey, J. K. et al. Single-molecule studies of electronic energy transfer in a diblock conjugated polymer. Angewandte Chemie, International Edition 44, 6207-6210 (2005).

Gesquiere, A. J., Kim, D. Y., Park, S.-J. & Barbara, P. F. Near-field spectroscopic studies of fluorescence quenching by charge carriers. ACS Symposium Series 897, 2-11 (2005).

Gesquiere, A. J., Uwada, T., Asahi, T., Masuhara, H. & Barbara, P. F. Single Molecule Spectroscopy of Organic Dye Nanoparticles. Nano Letters 5, 1321-1325 (2005).

Gesquiere, A. J., Lee, Y. J., Yu, J. & Barbara, P. F. Single Molecule Modulation Spectroscopy of Conjugated Polymers. Journal of Physical Chemistry B 109, 12366-12371 (2005).

Gesquiere, A. J., Park, S.-J. & Barbara, P. F. Hole-Induced Quenching of Triplet and Singlet Excitons in Conjugated Polymers. Journal of the American Chemical Society 127, 9556-9560 (2005).

Garrett, B. C. et al. Role of water in electron-initiated processes and radical chemistry: issues and scientific advances. Chemical Reviews (Washington, DC, United States) 105, 355-389 (2005).

Barbara, P. F., Gesquiere, A. J., Park, S.-J. & Lee, Y. J. Single-molecule spectroscopy of conjugated polymers. Accounts of Chemical Research 38, 602-610 (2005).

Barbara, P. F. Single-Molecule Spectroscopy. Accounts of Chemical Research 38, 503 (2005).

Yu, Z. & Barbara, P. F. Low-Temperature Single-Molecule Spectroscopy of MEH-PPV Conjugated Polymer Molecules. Journal of Physical Chemistry B 108, 11321-11326 (2004).

Yu, J., Song, N. W., McNeill, J. D. & Barbara, P. F. Efficient exciton quenching by hole polarons in the conjugated polymer MEH-PPV. Israel Journal of Chemistry 44, 127-132 (2004).

Park, S.-J., Gesquiere, A. J., Yu, J. & Barbara, P. F. Charge Injection and Photooxidation of Single Conjugated Polymer Molecules. Journal of the American Chemical Society 126, 4116-4117 (2004).

McNeill, J. D., Kim, D. Y., Yu, Z., O'Connor, D. B. & Barbara, P. F. Near Field Spectroscopic Investigation of Fluorescence Quenching by Charge Carriers in Pentacene-Doped Tetracene. Journal of Physical Chemistry B 108, 11368-11374 (2004).

Lee, Y. J., Kee, T. W., Zhang, T. & Barbara, P. F. Pump-Probe Spectroscopy of the Hydrated Electron in Reverse Micelles. Journal of Physical Chemistry B 108, 3474-3478 (2004).

Lee, Y. J., Zhang, T. & Barbara, P. F. Kinetics of Electron Attachment to Reverse Micelles. Journal of Physical Chemistry B 108, 5175-5178 (2004).

Lammi, R. K., Fritz, K. P., Scholes, G. D. & Barbara, P. F. Ordering of single conjugated polymers in a nematic liquid crystal host. Journal of Physical Chemistry B 108, 4593-4596 (2004).

Gesquiere, A. J., Park, S.-J. & Barbara, P. F. Photochemistry and kinetics of single organic nanoparticles in the presence of charge carriers. European Polymer Journal 40, 1013-1018 (2004).

Gesquiere, A. J., Park, S.-J. & Barbara, P. F. F-V/SMS: A New Technique for Studying the Structure and Dynamics of Single Molecules and Nanoparticles. Journal of Physical Chemistry B 108, 10301-10308 (2004).

Yu, Z., Li, J., O'Connor, D. B., Wang, L.-W. & Barbara, P. F. Large Resonant Stokes Shift in CdS Nanocrystals. Journal of Physical Chemistry B 107, 5670-5674 (2003).

Kalyuzhny, G., Buda, M., McNeill, J., Barbara, P. & Bard, A. J. Stability of Thin-Film Solid-State Electroluminescent Devices Based on Tris(2,2'-bipyridine)ruthenium(II) Complexes. Journal of the American Chemical Society 125, 6272-6283 (2003).

Barbara, P. F., Kim, D. Y. & McNeill, J. D. Imaging nanoscale electrical properties in polymer semiconductors. PMSE Preprints 88, 141 (2003).

Son, D. H., Kambhampati, P., Kee, T. W. & Barbara, P. F. Femtosecond Multicolor Pump-Probe Study of Ultrafast Electron Transfer of [(NH3)5RuIIINCRuII(CN)5]- in Aqueous Solution. Journal of Physical Chemistry A 106, 4591-4597 (2002).

Pell, L. E. et al. Single particle and ensemble spectroscopy of silicon nanoparticles. Materials Research Society Symposium Proceedings 704, 17-21 (2002).

McNeill, J. D. & Barbara, P. F. NSOM Investigation of Carrier Generation, Recombination, and Drift in a Conjugated Polymer. Journal of Physical Chemistry B 106, 4632-4639 (2002).

Kambhampati, P., Son, D. H., Kee, T. W. & Barbara, P. F. Solvation dynamics of the hydrated electron depends on its initial degree of electron delocalization. Journal of Physical Chemistry A 106, 2374-2378 (2002).

Hu, D., Yu, J., Padmanaban, G., Ramakrishanan, S. & Barbara, P. F. Spatial Confinement of Exciton Transfer and the Role of Conformational Order in Organic Nanoparticles. Nano Letters 2, 1121-1124 (2002).

Harbron, E. J. & Barbara, P. F. The Poisson distribution and single-molecule spectroscopy. An undergraduate analytical laboratory experiment. Journal of Chemical Education 79, 211-213 (2002).

English, D. S., Pell, L. E., Yu, Z., Barbara, P. F. & Korgel, B. A. Size Tunable Visible Luminescence from Individual Organic Monolayer Stabilized Silicon Nanocrystal Quantum Dots. Nano Letters 2, 681-685 (2002).

Barbara, P. F., De Schryver, F. C., Masuhara, H. & Okada, T. Noboru Mataga: Fifty Years of Research on Chemistry with Light. Journal of Physical Chemistry A 106, 1885-1886 (2002).

Yu, J., Hu, D. & Barbara, P. F. Photophysics of conjugated polymers unmasked by single molecule spectroscopy. Conference Proceedings - Italian Physical Society 71, 15-28 (2001).

Yu, J., Hu, D. H. & Barbara, P. F. Photophysics of conjugated polymers unmasked by single molecule spectroscopy. Springer Series in Chemical Physics 67, 114-129 (2001).

Wong, K. F. et al. Structural and Electronic Characterization of Chemical and Conformational Defects in Conjugated Polymers. Journal of Physical Chemistry B 105, 6103-6107 (2001).

Son, D. H., Kambhampati, P., Kee, T. W. & Barbara, P. F. Femtosecond multicolor pump-probe investigation of ultrafast electron transfer of (NH3)5RuIIINCRuII(CN)5- in solution. Springer Series in Chemical Physics 66, 491-493 (2001).

Son, D. H., Kambhampati, P., Kee, T. W. & Barbara, P. F. Delocalizing Electrons in Water with Light. Journal of Physical Chemistry A 105, 8269-8272 (2001).

Son, D. H., Kambhampati, P., Kee, T. W. & Barbara, P. F. One-photon UV detrapping of the hydrated electron. Chemical Physics Letters 342, 571-577 (2001).

McNeill, J. D., O'Connor, D. B., Adams, D. M., Barbara, P. F. & Kaemmer, S. B. Field-Induced Photoluminescence Modulation of MEH-PPV under Near-Field Optical Excitation. Journal of Physical Chemistry B 105, 76-82 (2001).

Kolosov, D. et al. Direct observation of structural changes in organic light emitting devices during degradation. Journal of Applied Physics 90, 3242-3247 (2001).

Kee, T. W., Son, D. H., Kambhampati, P. & Barbara, P. F. A Unified Electron Transfer Model for the Different Precursors and Excited States of the Hydrated Electron. Journal of Physical Chemistry A 105, 8434-8439 (2001).

English, D. S., Harbron, E. J. & Barbara, P. F. Role of rare sites in single molecule spectroscopy measurements of spectral diffusion. Journal of Chemical Physics 114, 10479-10485 (2001).

Denny, R. A., Bagchi, B. & Barbara, P. F. Effects of vibrational energy relaxation and reverse reaction on electron transfer kinetics and fluorescence line shapes in solution. Journal of Chemical Physics 115, 6058-6071 (2001).

Barbara, P. F., Hu, D., Yu, J. & Song, N. W. Single molecule spectroscopy of conjugated polymers. Abstracts of Papers, 221st ACS National Meeting, San Diego, CA, United States, April 1-5, 2001, PHYS-174 (2001).

Barbara, P. F. Molecular Machines Special Issue. Accounts of Chemical Research 34, 409 (2001).

Yu, J., Hu, D. & Barbara, P. F. Unmasking electronic energy transfer of conjugated polymers by suppression of O2 quenching. Science (Washington, D. C.) 289, 1327-1330 (2000).

Whaley, S. R., English, D. S., Hu, E. L., Barbara, P. F. & Belcher, A. M. Selection of peptides with semiconductor binding specificity for directed nanocrystal assembly. Nature (London) 405, 665-668 (2000).

McNeill, J. D., O'Connor, D. B. & Barbara, P. F. Imaging organic device function with near-field scanning optical microscopy. Journal of Chemical Physics 112, 7811-7821 (2000).

Kambhampati, P., Son, D. H., Kee, T. W. & Barbara, P. F. Solvent Effects on Vibrational Coherence and Ultrafast Reaction Dynamics in the Multicolor Pump-Probe Spectroscopy of Intervalence Electron Transfer. Journal of Physical Chemistry A 104, 10637-10644 (2000).

Kambhampati, P., Son, D. H., Kee, T. W. & Barbara, P. F. Variable pump-wavelength pump-probe experiments on intervalence charge transfer. Abstracts of Papers, 220th ACS National Meeting, Washington, DC, United States, August 20-24, 2000, PHYS-272 (2000).

Hu, D. et al. Collapse of stiff conjugated polymers with chemical defects into ordered, cylindrical conformations. Nature (London) 405, 1030-1033 (2000).

English, D. S., Furube, A. & Barbara, P. F. Single-molecule spectroscopy in oxygen-depleted polymer films. Chemical Physics Letters 324, 15-19 (2000).

English, D. S., Harbron, E. J. & Barbara, P. F. Probing Photoinduced Intersystem Crossing by Two-Color, Double Resonance Single Molecule Spectroscopy. Journal of Physical Chemistry A 104, 9057-9061 (2000).

Adams, D. M., Kerimo, J., Liu, C.-Y., Bard, A. J. & Barbara, P. F. Electric Field Modulated Near-Field Photo-Luminescence of Organic Thin Films. Journal of Physical Chemistry B 104, 6728-6736 (2000).

Vanoppen, P. et al. Excited state probing the supramolecular systems on a submicron scale. Applied Fluorescence in Chemistry, Biology and Medicine, 119-136 (1999).

Sheats, J. R. & Barbara, P. F. Molecular Materials in Electronic and Optoelectronic Devices. Accounts of Chemical Research 32, 191-192 (1999).

Hu, D., Yu, J. & Barbara, P. F. Single-Molecule Spectroscopy of the Conjugated Polymer MEH-PPV. Journal of the American Chemical Society 121, 6936-6937 (1999).

Barbara, P. F., Adams, D. M. & O'Connor, D. B. Characterization of organic thin film materials with near-field scanning optical microscopy (NSOM). Annual Review of Materials Science 29, 433-469 (1999).
           
Adams, D. M., Kerimo, J., O'Connor, D. B. & Barbara, P. F. Spatial Imaging of Singlet Energy Migration in Perylene Bis(phenethylimide) Thin Films. Journal of Physical Chemistry A 103, 10138-10143 (1999).