Λ-like chromophores for chiral non-linear optical materials

被引：75

作者：

Ostroverkhov, V

Petschek, RG

Singer, KD

Twieg, RJ

机构：

[1] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA

[2] Kent State Univ, Dept Chem, Kent, OH 44242 USA

来源：

CHEMICAL PHYSICS LETTERS | 2001年 / 340卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0009-2614(01)00406-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The first hyperpolarizability of several ii-like chromophores including Malachite Green and Brilliant Green were measured by means of Kleinman-disallowed hyper-Rayleigh (harmonic light) scattering (KD-HRS). Such chromophores are of interest as components of a new class of chiral and axial macroscopic materials. Light scattering measurements were carried out in both the non-resonant and the anomalous dispersion regime in order to compare experimental results with a two-level model that indicates that B-symmetry excited states will contribute. Large hyperpolarizabilities were observed in all cases and evidence that the lowest-lying excited state has B-symmetry was found in some molecules. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：109 / 115

页数：7

共 17 条

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