Dithiazolylethene-based molecular switches for nonlinear optical properties and fluorescence: synthesis, crystal structure and ligating properties
作者:Marion Giraud、Anne Léaustic、Régis Guillot、Pei Yu、Pascal G. Lacroix、Keitaro Nakatani、Robert Pansu、François Maurel
DOI:10.1039/b704806h
日期:——
Two photochromic dithiazolylethene-based derivatives (1a and 2a) incorporating a push–pull structural motif D–π–A are synthesized and structurally characterized. The photochemical reactions, which reversibly modify the connection between the electron donor and acceptor, result in simultaneous and effective photo-modulations of their NLO and fluorescent properties. The photo-switchable NLO behaviors are investigated theoretically by performing INDO calculations. The presence of chelating sites in 2a allows the synthesis of various metal complexes: Cu(hfac)2·2a, Mn(hfac)2·2a and Ag(2a)2CF3SO3. Their crystal structures are determined.
合成了两个基于二硫氮杂乙烯的具有推-拉结构特征的衍生化合物(1a和2a),并对其结构进行了表征。光化学反应能够可逆地改变电子供体和受体之间的连接,从而同时有效地调节其非线性光学(NLO)和荧光性能。通过执行INDO计算,理论上研究了光控开关的非线性光学行为。2a中存在配位位点,使得可以合成各种金属配合物:Cu(hfac)2·2a、Mn(hfac)2·2a和Ag(2a)2CF3SO3。它们的晶体结构被确定。