Enhanced second-order optical nonlinearities in extended thiophene containing compounds

Sandra Gilmour; Seth R. Marder; Joseph W. Perry; Lap-Tak A. Cheng

doi:10.1117/12.173811

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15 May 1994 Enhanced second-order optical nonlinearities in extended thiophene containing compounds

Sandra Gilmour, Seth R. Marder, Joseph W. Perry, Lap-Tak A. Cheng

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Proceedings Volume 2143, Organic, Metallo-Organic, and Polymeric Materials for Nonlinear Optical Applications; (1994) https://doi.org/10.1117/12.173811
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

The synthesis and first hyperpolarizabilities ((beta) ) of various donor-acceptor substituted thiophene containing compounds with extended conjugation are reported. Molecules incorporating the acceptor group, 3-phenyl-5-isoxazolone, that can gain aromaticity upon charge-separation had larger (beta) than analogous molecules containing a dicyanovinyl acceptor. For both acceptors insertion of a vinyl group between the thiophene bridge and methine carbon of the acceptor enhances the second-order hyperpolarizability but does not lead to a significant decrease in thermal stability. The molecules have been incorporated into poly(methyl methacrylate) and the electro-optic coefficients of these host-guest polymers measured.

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Sandra Gilmour, Seth R. Marder, Joseph W. Perry, and Lap-Tak A. Cheng "Enhanced second-order optical nonlinearities in extended thiophene containing compounds", Proc. SPIE 2143, Organic, Metallo-Organic, and Polymeric Materials for Nonlinear Optical Applications, (15 May 1994); https://doi.org/10.1117/12.173811

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