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Joseph PerryProfessor Office: MSE G209B Phone: 404-385-6046 Fax: 404-894-7452 |
B.S., University of South Florida, 1977 ; Ph.D., California Institute of Technology, 1984
Research Interests
Physical, Polymer and Materials Chemistry; Optical Science. Our research program focuses on understanding how the chemical structures of molecules and materials relate to their electronic and optical properties. We employ a molecular approach in which fundamental structure-property relations are defined through a coordinated synthesis, theory and characterization program. In particular, we seek to develop a fundamental understanding of how to control the interactions of light and matter, and use this understanding to design and synthesize molecules and material for applications in photonics, materials processing, biology, and medicine. We collaborate with theoretical, physical, and analytical chemists, optical scientists, and biologists providing researchers a multidisciplinary training.
A major focus of our research involves nonlinear optical absorption, wherein a molecule absorbs two or more photons at once. This process is intensity dependent; for two-photon absorption (TPA) the absorption rate increases quadratically with intensity. This allows activation of photo-chemical or photo-physical processes with high spatial resolution in 3-D. Current and future research directions are as follows: 1) In collaboration with Professor Marder's group, we are investigating structure-property relationships for TPA in conjugated molecules, with the goal of learning how to design efficient two-photon absorbers. These studies involve measurements of TPA spectra on molecules with systematically varied structures with dipolar, quadrupolar or octupolar charge redistribution. Excited-state Raman spectroscopy will be used to investigate the influence of excited-state structure and delocalization on TPA. 2) We are investigating excited-state reactions of systems excited by TPA. Current work focuses on molecules that undergo excited-state charge-transfer reactions following TPA and can thereby initiate polymerization. 3) TPA driven chemistry is being investigated for the 3-D patterning of materials. Using a femtosecond laser and a high-power microscope, we have fabricated 3-D structures (1-micron resolution), that can have interesting optical properties, see figure. Opportunities exist to study 3-D photopatterning of various materials including metals, and nanoparticles of metals and oxides. This allows tailoring of the optical and electronic properties of materials. 4) Fluorescent TPA chromophores are of interest for imaging and sensing and we are investigating the effects of solvent, concentration, and electric fields on TPA and fluorescence of conjugated molecules. 5) We have observed a large enhancement of the nonlinear absorption properties of dye molecules dissolved in cyanobiphenyl nematic liquid crystals (LC). Our studies indicate that photoinduced charge transfer from the dye to the LC results in the formation of strongly absorbing radical ions with high efficiency. Current studies are aimed at understanding the role of LC order in the efficiency of charge carrier generation. Other approaches, including the use of fullerene systems, to transient photochromic materials based on charge transfer are being pursued.
Recent Publications
"Two-photon absorption in three-dimensional chromophores based on [2.2]-paracyclophane," G. P. Bartholomew, M. Rumi, S. J. K. Pond, J. W. Perry, S. Tretiak, G. C. Bazan, J. Am. Chem. Soc., 2004, 126 (37): 11529-11542.
"Metal-ion sensing fluorophores with large two-photon absorption cross sections: Aza-crown ether substituted donor-acceptor-donor distyryl benzenes," S. J. K. Pond, O. Tsutsumi, M. Rumi, O. Kwon, E. Zojer, J. L. Brédas, S. R. Marder, J. W. Perry, J. Am. Chem. Soc., 2004 , 126 (30): 9291-9306.
"Two-photon absorption in linear bisdioxaborine compounds - The impact of correlation-induced oscillator-strength redistribution," E. Zojer, W. Wenseleers, M. Halik, C. Grasso, S. Barlow, J. W. Perry, S. R. Marder, J. L. Brédas, Chem. Phys. Chem., 2004, 5 (7): 982-988.
"Limitations of essential-state models for the description of two-photon absorption processes: The example of bis(dioxaborine)-substituted chromophores," E. Zojer, W. Wenseleers, P. Pacher, S. Barlow, M. Halik, C. Grasso, J. W. Perry, S. R. Marder, J. L. Brédas, J. Phys. Chem. B, 2004, 108 (25): 8641-8646.
"Real time differentiation of G-protein coupled receptor (GPCR) agonist and antagonist by two photon fluorescence laser microscopy," M. Y. Cai, M. Stankova, S. J. K. Pond, A. V. Mayorov, J. W. Perry, H. I. Yamamura, D. Trivedi, V. J. Hruby, J. Am. Chem. Soc., 2004, 126 (23): 7160-7161.
"Design and application of high-sensitivity two-photon initiators for three-dimensional microfabrication," S. M. Kuebler, K. L. Braun, W. Zhou, J. K. Cammack, T. Yu, C. K. Ober, S. R. Marder, J. W. Perry, J. Photochem. Photobio. A: Chemistry, 2003, 158, 163-170.
"Ultrabright supramolecular beacons based on self-assembly of two-photon chromophores on metal nanoparticles," F. Stellacci, C. A. Bauer, T. Meyer-Friedrichsen, W. Wenseleers, S. R. Marder, J. W. Perry, J. Am. Chem. Soc., 2003, 125, 328-329.
"Chemically-amplified positive resist system for two-photon three-dimensional lithography," T. Yu, C. K. Ober, S. M. Kuebler, W. Zhou, S. R. Marder, J. W. Perry, Adv. Mat., 2003, 15, 517- 521.
"Bis(dioxaborine) compounds with large two-photon cross sections, and their use in the photodeposition of silver," M. Halik, W. Wenseleers, C. Grasso, F. Stellacci, E. Zojer, S. Barlow, J.-L. BrŽdas, J. W. Perry, S. R. Marder, Chem. Commun., 2003, 1490.
"Information storage and retrieval using Macromol. as storage media," M. Mansuripur, P. K. Khulbe, S. M. Kuebler, J. W. Perry, M. S. Giridhar, J. K. Erwin, K. Seong, S. R. Marder, N. Peyghambarian, Proc. Soc. of Photo-Opt. Instr. Eng., 2003, 5069, 231-243.
"Synthesis and characterization of efficient two-photon acid generators for 3D microfabrication" J. Wang, W. Zhou, K. L. Braun, S. Barlow, S. M. Kuebler, J. W. Perry, S. R. Marder, Polymer Preprints (American Chemical Society, Division of Polymer Chemistry), 2003, 44(1), 970-971.
"Five orders-of-magnitude enhancement of two-photon absorption for dyes on silver nanoparticle fractal clusters," W. Wenseleers, F .Stellacci, T. Meyer-Friedrichsen, T. Mangel, S. R. Marder, J. W. Perry, J. Phys. Chem. B, 2002, 106, 6853-6863.
"Laser and electron-beam induced growth of nanoparticles for 2D and 3D metal patterning," F. Stellacci. C. A. Bauer, T. Meyer-Friedrichsen, W. Wenseleers, V. Alain, S. M. Kuebler, S. J. K. Pond, Y. Zhang, S. R. Marder, J. W. Perry, Adv. Mater., 2002, 14, 194-198.
"Efficient photoacids based upon triarylamine diakylsulfonium salts," W. Zhou, S. M. Kuebler, D. Carrig, J. W. Perry, S. R. Marder, J. Am. Chem. Soc., 2002, 124, 1897-1901.
"Tuning the two-photon absorption response of quadrupolar organic molecules," E. Zojer, D. Beljonne, T. Kogej, H. Vogel, S. R. Marder, J. W. Perry, J. L. Brédas, J. Chem. Phys., 2002, 116, 3646-3658.
"An efficient two-photon photoacids and their applications to 3D microfabrication in positive-tone resists," W. Zhou, S. M. Kuebler, K. L. Braun, T. Yu, J. K. Cammack, C. K. Ober, J. W. Perry, S. R. Marder, J. Am. Chem. Soc., 2002, 124, 1897-1901.
"An efficient two-photon-generated photoacid applied to positive-tone 3D microfabrication," W. Zhou, S. M. Kuebler, K. Braun, T. Yu, J. K. Cammack, C. Ober, J. W. Perry, S. R. Marder, Science, 2002, 296, 1106-1109.
"Role of dimensionality on the two-photon absorption response of conjugated molecules: The case of octupolar compounds," D. Beljonne, E. Zojer, L. Shuai, H. Vogel, W. Wenseleers, J. K. Pond, J. W. Perry, S. R. Marder, J. L. Brédas, Adv. Funct. Mater., 2002, 12, 631-641.
"Photoresponsive hydrogel microstructure fabricated by two-photon initiated polymerization," T. Watanabe, M. Akiyama, K. Totani, S. M. Kuebler, F. Stellacci, W. Wenseleeers, K. Braun, S. R. Marder, J. W. Perry, Adv. Funct. Mater., 2002, 12, 611-614.
"One- and two-photon spectroscopy of donor-acceptor-donor di(styryl)benzene derivatives. Effect of cyano substitution and distortion from planarity," S. J. K. Pond, M. Rumi, M. D. Levin, T. C. Parker, D. Beljonne, M. W. Day, J. L. Brédas, S. R. Marder, J. W. Perry, J. Phys. Chem. A, 2002, 47, 11470-11480.
"Optimizing two-photon initiators and exposure conditions for three-dimensionallithographic microfabrication," S. M. Kuebler, M. Rumi, T. Watanabe, K. Braun, B. H. Cumpston, A. A. Heikal. L. L. Erskine, S. Thayumanavan, S. Barlow, S. R. Marder, J. W. Perry, J. Photopolym. Sci. Tech., 2001, 14, 657-668.
"Quantum-chemical design of two-photon absorbing organic chromophores," D .Beljonne, J. W. Perry, S. R. Marder, J. L. Brédas, Nonlinear Optics, 2001, 27, 47-63.
"Nonlinear Optical Absorption Properties Of Bis-Diarylaminobiphenyl Chromophores," J. E. Ehrlich, S. P. Ananthavel, S. Barlow, K. Mansour, K. Mohanalingam, S. R. Marder, J. W. Perry, M. Rumi, S. Thayumanavan, Nonlinear Optics, 2001, 27, 121-131.