Journal article
Modulated Conjugation as a Means of Improving the Intrinsic Hyperpolarizability
Journal of the American Chemical Society, Vol.131(14), pp.5084-5093
04/15/2009
Handle:
https://hdl.handle.net/2376/107746
PMID: 19351204
Abstract
A new strategy for optimizing the first hyperpolarizability based on the concept of a modulated conjugated path in linear molecules is investigated. A series of seven novel chromophores with different types of conjugated paths were synthesized and characterized. Hyper-Rayleigh scattering experiments confirmed that modulated conjugation paths that include benzene, thiophene, and/or thiazole rings in combination with azo and/or ethenyl linkages between dihydroxyethylamino donor groups and various acceptor groups result in enhanced intrinsic hyperpolarizabilities that exceed the long-standing apparent limit for two of the chromophores. The experimental results are analyzed and interpreted in the context of quantum limits, which show that conjugation modulation of the bridge in donor/acceptor molecules simultaneously optimizes the transition moments and the energy-level spacing.
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Details
- Title
- Modulated Conjugation as a Means of Improving the Intrinsic Hyperpolarizability
- Creators
- Javier Pérez-MorenoYuxia ZhaoKoen ClaysMark G KuzykYuquan ShenLing QiuJumin HaoKunpeng Guo
- Publication Details
- Journal of the American Chemical Society, Vol.131(14), pp.5084-5093
- Academic Unit
- Physics and Astronomy, Department of
- Publisher
- American Chemical Society
- Identifiers
- 99900547482201842
- Language
- English
- Resource Type
- Journal article