A new class of photochromic 1,2-diarylethenes; synthesis and switching properties of bis(3-thienyl)cyclopentenes

Abstract

A novel synthetic route to diarylethenes fixed in a cyclopentene based on titanium-mediated carbonyl coupling leads to bis(3-thienyl)cyclopentenes that show photochromic behaviour similar to that of known diarylethenes.

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