title: Gated photochromism of 1,2-diarylethenes.
abstract: A dithienylethene derivative containing a cyclobutene-1,2-dione skeleton does not exhibit photochromic properties. However, when both ketone functions are protected with cyclic acetal groups, photochromic behavior is observed.
authors: Department of Chemistry, University of Fribourg, Chemin du Musée 9, Fribourg, Switzerland.
authors: Joël
authors: J
authors: Kühni
authors: Peter
authors: P
authors: Belser