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Nonsymmetrical Dithienylethenes Bearing Dithieno[3,2‐ b :2′,3′‐ d ]thiophene Units with Photochromic Performance in the Crystalline Phase
Author(s) -
Wang Hongke,
Lin Hui,
Xu Wei,
Zhu Daoben
Publication year - 2013
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201202520
Subject(s) - photochromism , thiophene , bearing (navigation) , phase (matter) , materials science , polymer chemistry , chemistry , physics , nanotechnology , organic chemistry , astronomy
Four novel nonsymmetrical photochromic diarylethene compounds containing dithieno[3,2‐ b :2′,3′‐ d ]thiophene units were designed and synthesized to investigate their photochromic properties. All these molecules adopt a photoactive antiparallel conformation in single crystals, as revealed by X‐ray crystallographic analysis, and exhibit excellent photochromism in solution as well as in the crystalline phase.