Issue 11, 2003
From the journal:

Photochemical & Photobiological Sciences

Photochromism of diarylethenes in nanolayers of a single crystal†

Masakazu Morimoto,a   Seiya Kobatakea  and  Masahiro Irie*a  

* Corresponding authors

a Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, Hakozaki 6-10-1, Higashi-ku, Fukuoka 812-8581, Japan
E-mail: irie@cstf.kyushu-u.ac.jp
Fax: +81-92-642-3568
Tel: +81-92-642-3556

Abstract

1,2-Bis(2-methyl-5-pentafluorophenyl-3-thienyl)perfluorocyclopentene (1a) and 1,2-bis(2-ethyl-5-phenyl-3-thienyl)perfluorocyclopentene (2a) were found to form a 1 ∶ 1 stoichiometric co-crystal. The crystal is composed of alternate nanolayers of 1a and 2a molecular sheets. π–π Stacking of 1a and 2a molecules by aryl–perfluoroaryl interactions was not discerned. One-component 1a and 2a crystals and the co-crystal showed a reversible colour change from colourless to blue upon irradiation with ultraviolet and visible light. Although both 1a and 2a molecules underwent efficient photochromic reactions in the one-component crystals upon photoirradiation, only 2a underwent the reaction up to a conversion of 20% in the co-crystal, as confirmed by HPLC and X-ray crystallography. This indicates that excited energy transfer occurs from 1a to 2a in the crystal.

Graphical abstract: Photochromism of diarylethenes in nanolayers of a single crystal

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Article information

DOI
https://doi.org/10.1039/B307999F
Article type
Paper
Submitted
15 Jul 2003
Accepted
26 Sep 2003
First published
09 Oct 2003

Photochem. Photobiol. Sci., 2003,2, 1088-1094

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Photochromism of diarylethenes in nanolayers of a single crystal

M. Morimoto, S. Kobatake and M. Irie, Photochem. Photobiol. Sci., 2003, 2, 1088 DOI: 10.1039/B307999F

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