Photoinduced swing of a diarylethene thin broad sword shaped crystal: a study on the detailed mechanism.

Chemical Science
Ayako FujimotoKingo Uchida

Abstract

We report a swinging motion of photochromic thin broad sword shaped crystals upon continuous irradiation with UV light. By contrast in thick crystals, photosalient phenomena were observed. The bending and swinging mechanisms are in fact due to molecular size changes as well as phase transitions. The first slight bending away from the light source is due to photocyclization-induced surface expansion, and the second dramatic bending toward UV incidence is due to single-crystal-to-single-crystal (SCSC) phase transition from the original phase I to phase IIUV. Upon visible light irradiation, the crystal returned to phase I. A similar SCSC phase transition with a similar volume decrease occurred by lowering the temperature (phase IIItemp). For both photoinduced and thermal SCSC phase transitions, the symmetry of the unit cell is lowered; in phase IIUV the twisting angle of disordered phenyl groups is different between two adjacent molecules, while in phase IIItemp, the population of the phenyl rotamer is different between adjacent molecules. In the case of phase IIUV, we found thickness dependent photosalient phenomena. The thin broad sword shaped crystals with a 3 μm thickness showed no photosalient phenomena, whereas photoinduced ...Continue Reading

References

Jan 5, 2002·Chemical Reviews·Masahiro Irie
Dec 14, 2002·Chemical Communications : Chem Comm·Seiya KobatakeMasahiro Irie
Sep 12, 2003·Nature·Yanlei YuTomiki Ikeda
Mar 10, 2006·Organic & Biomolecular Chemistry·Kingo UchidaBen L Feringa
Apr 11, 2008·Chemical Communications : Chem Comm·Kingo UchidaBen L Feringa
May 21, 2009·Journal of the American Chemical Society·Hideko KoshimaHidetaka Uchimoto
Sep 23, 2010·Journal of the American Chemical Society·Masakazu Morimoto, Masahiro Irie
Jul 14, 2011·Journal of the American Chemical Society·Lingyan ZhuChristopher J Bardeen
Sep 22, 2011·Chemical Communications : Chem Comm·Hideko KoshimaDaisuke Hashizume
Jul 23, 2013·Angewandte Chemie·Daichi KitagawaSeiya Kobatake
Dec 17, 2014·Chemical Reviews·Masahiro IrieSeiya Kobatake
Nov 5, 2015·Chemical Reviews·Panče NaumovElena Boldyreva
Jul 8, 2016·Chemistry : a European Journal·Eri HatanoKingo Uchida
Oct 19, 2017·Physical Chemistry Chemical Physics : PCCP·Michael T RuggieroTimothy M Korter
Apr 2, 2019·Chemistry : a European Journal·Yuma NakagawaKingo Uchida
Nov 27, 2019·Chemical Science·Liang LiPanče Naumov

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Methods Mentioned

BETA
X-ray
differential scanning calorimetry

Software Mentioned

ABSCOR
SHELX

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