Title: Modulated Conjugation as a Means of Improving the Intrinsic Hyperpolarizability
Authors: Perez-Moreno, Javier ×
Zhao, Yuxia
Clays, Koen
Kuzyk, Mark G
Shen, Yuquan
Qiu, Ling
Hao, Jumin
Guo, Kunpeng #
Issue Date: Apr-2009
Publisher: Amer chemical soc
Series Title: Journal of the American Chemical Society vol:131 issue:14 pages:5084-5093
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.
ISSN: 0002-7863
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Molecular Imaging and Photonics
× corresponding author
# (joint) last author

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