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15 May 1994 Enhanced second-order optical nonlinearities in extended thiophene containing compounds
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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.
© (1994) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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