Photoswitch based on remarkably simple naphthopyrans

被引：36

作者：

Sallenave, X

Delbaere, S

Vermeersch, G

Saleh, A

Pozzo, JL

机构：

[1] CNRS, UMR 5802, F-33405 Talence, France

[2] Univ Lille 2, Fac Pharm, CNRS, UMR 8009, F-59006 Lille, France

[3] Assiut Univ, Fac Sci, Dept Chem, Assiut 71516, Egypt

来源：

TETRAHEDRON LETTERS | 2005年 / 46卷 / 18期

关键词：

photoswitch; naphthopyrans; F-19; NMR; photochromism;

D O I：

10.1016/j.tetlet.2005.02.091

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Photochromic switches built around 5-carbonyl-3,3-diphenyl-3H-naphtho[2,1-b]pyran unit have been synthesized. Their open forms are constituted of a 1:1 ratio of TC and TT-isomers according to F-19 and H-1 NMR investigations. Electrocyclization of TT isomers back to the closed form is efficiently achieved upon visible irradiation whereas it has been found to be a particularly unfavoured thermal process. These simple 2H-chromenes could act as molecular photoswitch at ambient temperature. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：3257 / 3259

页数：3

共 18 条

[1] Multiaddressable self-assembling organogelators based on 2H-chromene and N-acyl-1,ω-amino acid units [J].