Structure/property relationships for molecular second‐order nonlinear optics
作者:
Seth R. Marder,
Lap‐Tak Cheng,
David N. Beratan,
期刊:
AIP Conference Proceedings
(AIP Available online 1992)
卷期:
Volume 262,
issue 1
页码: 252-266
ISSN:0094-243X
年代: 1992
DOI:10.1063/1.42658
出版商: AIP
数据来源: AIP
摘要:
Using a two‐state model, it was recently shown that there is an optimal combination of donor and acceptor strengths for a given bridge that will maximize the first molecular electronic hyperpolarizability (&bgr;). Implementation of this strategy relies on the realization that molecules with strongly aromatic end groups will not have the correct balance of two limiting charge transfer resonance forms in the ground state to achieve the degree of bond alternation required to optimize the molecular hyperpolarizability. Electric field induced second harmonic generation studies on organic molecules with various bridge structures support our hypothesis.
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