Benzothiazolium-π-thiazole-dicyanomethanides: new nonlinear optical chromophores

被引：14

作者：

Andreu, Raquel ^{[1
]}

Galan, Elena ^{[1
]}

Garin, Javier ^{[1
]}

Orduna, Jesus ^{[1
]}

Alicante, Raquel ^{[2
]}

Villacampa, Belen ^{[2
]}

机构：

[1] Univ Zaragoza, CSIC, Dept Quim Organ, ICMA, E-50009 Zaragoza, Spain

[2] Univ Zaragoza, CSIC, Dept Fis Mat Condensada, ICMA, E-50009 Zaragoza, Spain

来源：

TETRAHEDRON LETTERS | 2010年 / 51卷 / 52期

关键词：

Benzothiazole; Thiazole; Nonlinear optics; BOND-LENGTH ALTERNATION; MOLECULAR HYPERPOLARIZABILITIES; DYES; CYANINE; FILMS; DFT;

D O I：

10.1016/j.tetlet.2010.10.103

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A series of merocyanines with a benzothiazolylidene donor and a quinoidal thiazole moiety have been synthesized. Experimental results and theoretical calculations show that these compounds have zwitterionic ground states and negative second-order optical nonlinearities. Unlike most merocyanines, the degree of charge transfer does not decrease on increasing the separation between the donor and the acceptor groups, an unexpected feature related to the presence of the proaromatic thiazole fragment. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：6863 / 6866

页数：4

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