Organic and Organometallic Compounds
Abstract
Organic and organometallic stilbazolium cations can be crystallized with various counterions; some of the resulting salts exhibit large SHG powder efficiencies. Approximately linear stilbazolium cations have a greater tendency to crystallize in noncentrosymmetric space groups than do cations with substantial geometric asymmetry. The nonresonant quadratic molecular hyperpolarizabilities of several ferrocene and ruthenocene derivatives were studied by DC electric-field-induced second-harmonic generation (EFISH) experiments using fundamental radiation at 1.91 µm. Hyperpolarizabilities approaching that of 4-dimethylamino 4'-nitro-stilbene (DANS) were observed indicating that the ferrocene moiety can act as an effective donor. EFISH measurements indicate that indoaniline dyes with very polarizable π systems have large molecular hyperpolarizabilities (β), in one case approaching three times that of DANS.
Additional Information
© 1991 American Chemical Society. Received August 14, 1990. Published in print 11 March 1991. The authors thank H. Jones, T. Hunt, Dr. L. Khundkar, and K. J. Perry for expert technical assistance. The research described in this paper was performed, in part, by the Jet Propulsion Laboratory, California Institute of Technology as part of its Center for Space Microelectronics Technology which is supported by the Strategic Defense Initiative Organization, Innovative Science and Technology Office through an agreement with the National Aeronautics and Space Administration (NASA). The diffractometer used in this study was purchased with a grant from the National Science Foundation #CHE-8219039.Additional details
- Eprint ID
- 85638
- Resolver ID
- CaltechAUTHORS:20180405-123857800
- Strategic Defense Initiative Organization (SDIO)
- NASA
- CHE-8219039
- NSF
- Created
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2018-04-05Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field
- Series Name
- ACS Symposium Series
- Series Volume or Issue Number
- 455