Large second-order optical nonlinearities and enhanced thermal stabilities in extended thiophene-containing compounds

Authors

  • Dr. Sandra Gilmour,

    1. Jet Propulsion Laboratory, California. Institute of Technology 4800 Oak Grove Drive, Mail Stop 67-201, Pasadena, CA 91109 (USA)
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  • Dr. Seth R. Marder,

    Corresponding author
    1. Jet Propulsion Laboratory, California. Institute of Technology 4800 Oak Grove Drive, Mail Stop 67-201, Pasadena, CA 91109 (USA)
    • Jet Propulsion Laboratory, California. Institute of Technology 4800 Oak Grove Drive, Mail Stop 67-201, Pasadena, CA 91109 (USA)
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  • Dr. Joseph W. Perry,

    1. Jet Propulsion Laboratory, California. Institute of Technology 4800 Oak Grove Drive, Mail Stop 67-201, Pasadena, CA 91109 (USA)
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    • Also at Molecular Materials Resource Center, The Beckman Institute, California Institute of Technology, Mail Stop 139-74, Pasadena, CA 91125 (USA)

  • Dr. Lap-Tak Cheng

    1. Central Research and Development Department E. I. Du Pont de Nemours & Co., Inc. Experimental Station P.O. Box 80356, Wilmington, DE 19880-0356 (USA)
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  • The work in this paper was performed, in part, by the Center for Space Microelectronics Technology, Jet Propulsion Laboratory, California Institute of Technology and was sponsored by the Ballistic Missile Defense Organization, Innovative Science and Technology Office and The Advanced Research Projects Agency through a contract administered by the Air Force Office of Scientific Research (AFOSR) and through agreements with the National Aeronautics and Space Administration (NASA). Support from the Beckman Institute, the National Science Foundation (Grant CHE-9106689), AFOSR (Grant F49620-1-0314), E. I. Du Pont de Nemours and Co., Inc., and Eni Chem America is also gratefully acknowledged. SG thanks the National Research Council and NASA for a Resident Research Associateship at the Jet Propulsion Laboratory. The authors thank Alex Jen for helpful discussions.

Abstract

The optimiztion of second order optical nonliearity requires molecules with a specific degree of ground-state polarization. In this connection, studies of extended thiophne-containing compunds with acceptors that gain aromaticity on charge separation, such as the molecule shown, are described. As it also exhibits good therma stability, this compound is a promising candidate for electro-optic poled polymer applications.

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