Photochromic Properties of Perhydro- and Perfluorodithienylcyclopentene Molecular Switches
作者:Jaap J. D. de Jong、Linda N. Lucas、Ralph Hania、Audrius Pugzlys、Richard M. Kellogg、Ben L. Feringa、Koos Duppen、Jan H. van Esch
DOI:10.1002/ejoc.200200719
日期:2003.5
Various substituted phenylthienyl perhydro- and perfluorocyclopentenes have been synthesized in order to compare their spectroscopic and photochromic properties. The difference in the electron densities of the central cyclopentene moieties in the perhydrocyclopentene and perfluorocyclopentene molecular switches has only a small effect on the absorption maxima of the electronic spectra, but causes some
为了比较它们的光谱和光致变色特性,已经合成了各种取代的苯基噻吩基全氢和全氟环戊烯。全氢环戊烯和全氟环戊烯分子开关中中心环戊烯部分的电子密度差异对电子光谱的吸收最大值只有很小的影响,但会引起取代基和溶剂致变色效应的一些细微变化。光致变色行为非常相似,两种类型的开关都结合了出色的量子产率 (0.6) 和高度的光转换 (> 0.85)。主要区别在于全氢环戊烯分子开关的光化学和热稳定性较低。得出的结论是,在大多数研究中,全氢环戊烯是全氟环戊烯的绝佳替代品,而全氟环戊烯可能更适合数据存储等应用,这些应用关键取决于抗疲劳性和热稳定性。((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)。