Job Openings

• Post-Doctoral Fellowship for Photonic Materials - Recent Ph.D.s specializing in synthesis and characterization of conjugated polymers, oligomers or liquid crystals are especially welcome. Duties include conducting innovative research and supervising graduate research in a multidisciplinary lab. Salary will be commensurate with qualifications. Send resume with three references to Professor Shaw H. Chen, Center for Optoelectronics and Imaging, University of Rochester, 240 East River Road, Rochester, NY 14623-1212. University of Rochester is an equal opportunity employer.

Principal Investigator

Shaw H. Chen (Ph.D. Chemical Engineering, University of Minnesota, 1981)
Professor and Chair of Chemical Engineering
Professor of Materials Science
Senior Scientist, Laboratory for Laser Energetics
University of Rochester, Rochester, New York

Contact Information

Center for Optoelectronics and Imaging Room 1210
University of Rochester, 240 East River Road
Rochester, New York 14623-1212
Telephone: (585)275-0909/Facsimile: (585)273-1014
E-mail: shch@lle.rochester.edu

Areas of Expertise

Organic Semiconductors; Glassy Liquid Crystals; Self-Assembled Organic Thin Films; Optical, Photonic, and Optoelectronic Materials and Devices.

Research Summary

Our research features molecular design, computational chemistry, material synthesis and processing, and device science. In particular, we have developed liquid crystals, including conjugated systems, capable of preserving molecular order in the solid state through vitrification. Various device concepts have been demonstrated using select materials, such as nonabsorbing polarizers, notch filters and reflectors, polarized fluorescence and electroluminescence, field-effect transistors, and solid-state lasers. Current activities are directed at hybrid host materials for phosphorescent organic light-emitting diodes, photoalignment coupled with solvent-vapor annealing for orientation of conjugated systems, and geometric surfactants for modulation of nanoscale phase separation for bulk heterojunction organic photovoltaics. In addition, we are actively involved in the high throughput, precise production of polymer shells by microfluidics for use as laser fusion targets.

GLC SLIDESHOW

SELECTED FROM A LIST OF OVER 140 REFEREED JOURNAL PUBLICATIONS

1. D. F. Evans, S. H. Chen, E. M. Arnett, and G. W. Schriver, "Thermodynamics of Solution of Nonpolar Gases in a Fused Salt," J. Am. Chem. Soc. 103, 481 (1981).
2. S. H. Chen, H. T. Davis, and D. F. Evans, "Tracer Diffusion in Polyatomic Liquids. III," J. Chem. Phys. 77, 2540 (1982).
3. C. K. J. Sun, and S. H. Chen, "Diffusion of Benzene, Toluene, Naphthalene and Phenanthrene in Supercritical Dense 2,3-Dimethylbutane," AIChE J. 31, 1904 (1985).
4. J. J. Ou, C. S. Lee, and S. H., Chen, "Mixing Induced by Flow Geometry: Spatial Distribution and Time Evolution of the Measures of Mechanical Mixedness," Chem. Eng. Sci. 40, 2225 (1985).
5. S. H. Chen, H. Shi, J. C. Mastrangelo, and J. J. Ou, "Thermotrpoic Chiral Nematic Side-Chain Polymers and Cyclic Oligomers," Prog. Polym. Sci. 21, 1211 (1996); invited review. View
6. S. H. Chen, H. Shi, B. M. Conger, J. C. Mastrangelo, and T. Tsutsui, "Novel Vitrifiable Liquid Crystals as Optical Materials," Adv. Mater. 8, 998 (1996). View
7. S. H. Chen, D. Katsis, J. C. Mastrangelo, A. W. Schmid, T. Tsutsui, and T. N. Blanton, "Circularly Polarized Light Generated by Photoexcitation of Luminophores in Glassy Liquid-Crystal Films," Nature 397, 506 (1999). View
8. Y. H. Geng, A. Trajkovska, D. Katsis, J. J. Ou, S. W. Culligan, and S. H. Chen, "Synthesis, Characterization, and Optical Properties of Monodisperse Chiral Oligofluorenes," J. Am. Chem. Soc. 124, 8337 (2002). View
9. S. H. Chen, H. M. P. Chen, Y. H. Geng, S. D. Jacobs, K. L. Marshall, and T. N. Blanton, "Novel Glassy Nematic Liquid Crystals for Nondestructive Rewritable Optical Memory and Photonic Switching," Adv. Mater. 15, 1061 (2003). View
10. S. W. Culligan, Y. H. Geng, S. H. Chen, K. Klubek, K. M. Vaeth, and C. W. Tang, "Strongly Polarized and Efficient Blue Organic Light-Emitting Diodes Using Monodisperse Glassy-Nematic Oligo(fluorene)s," Adv. Mater. 15, 1176 (2003). View
11. Y. Geng, A. Trajkovska, S. W. Culligan, J. J. Ou, H. M. P. Chen, D. Katsis, and S. H. Chen, "Origin of Strong Chiroptical Activities in Films of Nonaflourenes with a Varying Extent of Pendant Chirality," J. Am. Chem. Soc. 125, 14032 (2003). View
12. A. C. A. Chen, S. W. Culligan, Y. Geng, S. H. Chen, K. Klubek, K. Vaeth, and C. W. Tang, "Organic Polarized Light-Emitting Diodes via Forster Energy Transfer Using Monodisperse Conjugated Oligomers," Adv. Mater. 16, 783 (2004). View
13. T. Yasuda, K. Fujita, T. Tsutsui, Y, Geng, S. W. Culligan, and S. H. Chen, "Carrier Transport Properties of Monodisperse Glassy-Nematic Oligofluorenes in Organic Field-Effect Transistors," Chem. Mater. 17, 264 (2005). View
14. C. Kim, A. Trajkovska, J. U. Wallace, and S. H. Chen, "New Insight into Photoalignment of Liquid Crystals on Coumarin-Containing Polymer Films," Macromolecules 39, 3817 (2006). View
15. S. W. Culligan, A. C. A. Chen, K. P. Klubek, C. W. Tang, and S. H. Chen, "Effect of Hole Mobility through Emissive Layer on Temporal Stability of Blue Organic Light-Emitting Diodes," Adv. Funct. Mater. 16, 1481 (2006). View
16. J. U. Wallace and S. H. Chen, "Fluorene-Based Conjugated Oligomers for Organic Photonics and Electronics," Advances in Polymer Sci., 212, 145 (2008). View

COMPLETE LIST OF PUBLICATIONS

PATENTS

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