title: Facile synthesis and characterization of new photochromic trans-dithienylethenes functionalized with pyridines and fluorenes.
abstract: Three symmetrical and unsymmetrical trans-dithienylethenes functionalized with pyridines and fluorenes have been synthesized by a facile one-pot procedure, and their characteristics and photochromism were investigated. Their fluorescent intensity was efficiently regulated by a photochromic switch using alternative irradiation with UV light and visible light. Moreover, by protonation and complexation, the pyridyl-substituted compounds also showed excellent photoswitching properties with distinguishable color changes. These characteristics are expected to be applicable to potential multi-addressable photoswitch and erasable optical data processing technologies.
authors.affiliation: Key Lab for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, PR China.
authors.forename: Qianfu
authors.initials: Q
authors.lastname: Luo
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
authors.forename: Xin
authors.initials: X
authors.lastname: Li
authors.forename: He
authors.initials: H
authors.lastname: Tian