Boomerang-shaped octupolar molecules derived from triphenylbenzene

被引:17
作者
Brunel, J
Jutand, A
Ledoux, I
Zyss, J
Blanchard-Desce, M
机构
[1] Univ Rennes 1, CNRS UMR 6510, F-35042 Rennes, France
[2] ENS, Lab Photon Quant & Mol, CNRS UMR 8537, F-94235 Cachan, France
[3] Ecole Normale Super, Dept Chim, CNRS UMR 8640, F-75231 Paris, France
关键词
boomerang-shaped chromophores; triphenylbenzene; non-linear optics; octupoles; hyperpolarizability; harmonic light scattering;
D O I
10.1016/S0379-6779(01)00443-X
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Octupolar molecules are of particular interest in the field of non-linear optics due to their potentially large quadratic non-linearities and challenging material engineering possibilities. In order to design molecules combining enhanced first hyperpolarizabilities and excellent transparency in the visible region, we have implemented a strategy based on the design of all-organic molecules showing multi-dimensional intramolecular charge transfer. In this perspective, we have designed original propeller-shaped conjugated molecules based on a central triphenylbenzene core bearing three phenylene-vinylene blades. By grafting either electron-donating or electron-withdrawing terminal moieties and taking advantage of multidirectional charge transfer between the centre and the periphery of these molecules, octupolar compounds displaying excellent transparency in the visible region and larger non-linearity than DRI were obtained (up to beta (0) = 140 x 10(-30) esu with lambda (max) = 385 nm). (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:195 / 199
页数:5
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