The considerable photostability improvement of photochromic terarylene by sulfone group
作者:Yong-Chul Jeong、Chunji Gao、In Su Lee、Sung Ik Yang、Kwang-Hyun Ahn
DOI:10.1016/j.tetlet.2009.07.028
日期:2009.9
Photochromic terarylene derivative 4 which has a sulfone group at the upper benzothiophene ring is readily synthesized using Suzuki coupling reaction. It exhibits good photochromic properties. Interestingly, the closed form of the compound 4 shows a good photostability as well as a thermal stability compared with its reduced analog 3, that provides a method to enhance the photostability of versatile photochromic terarylenes under UV. (c) 2009 Elsevier Ltd. All rights reserved.