TY - JOUR
T1 - Photo-triggered phase transition of a crystal
AU - Taniguchi, Takuya
AU - Sato, Hiroyasu
AU - Hagiwara, Yuki
AU - Asahi, Toru
AU - Koshima, Hideko
N1 - Funding Information:
This study was financially supported by the JSPS Grant-in-Aid for Scientific Research B (17H03107), Challenging Exploratory Research (16K12918), and Research Fellowship for Young Scientists, and WISE project research (Research for Energy·Next) at Waseda University. We would like to thank Japan High Tech Co., Ltd. for the use of a temperature control stage. We also thank Smart Energy System Innovation Center at Waseda University for the use of a super dry room. T.T. and T.A. thanks the Leading Graduate Program in Science and Engineering at Waseda University.
Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Structural phase transitions induced by external stimuli such as temperature, pressure, electromagnetic fields, and light play crucial roles in controlling the functions of solid-state materials. Here we report a new phase transition, referred to as the photo-triggered phase transition, of a photochromic chiral salicylideneamine crystal. The crystal, which exhibits a thermal single-crystal-to-single-crystal phase transition which is reversible upon heating and cooling, transforms to the identical phase upon light irradiation at temperatures lower than the thermal transition temperature. The photo-triggered phase transition originates from the strain of trans-keto molecules produced by enol–keto photoisomerization owing to the small energy barrier associated with changes in the crystal structure. The photo-triggered phase is metastable and returns to the initial stable phase via back isomerization from the trans-keto to enol form.
AB - Structural phase transitions induced by external stimuli such as temperature, pressure, electromagnetic fields, and light play crucial roles in controlling the functions of solid-state materials. Here we report a new phase transition, referred to as the photo-triggered phase transition, of a photochromic chiral salicylideneamine crystal. The crystal, which exhibits a thermal single-crystal-to-single-crystal phase transition which is reversible upon heating and cooling, transforms to the identical phase upon light irradiation at temperatures lower than the thermal transition temperature. The photo-triggered phase transition originates from the strain of trans-keto molecules produced by enol–keto photoisomerization owing to the small energy barrier associated with changes in the crystal structure. The photo-triggered phase is metastable and returns to the initial stable phase via back isomerization from the trans-keto to enol form.
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U2 - 10.1038/s42004-019-0121-8
DO - 10.1038/s42004-019-0121-8
M3 - Article
AN - SCOPUS:85069896127
SN - 2399-3669
VL - 2
JO - Communications Chemistry
JF - Communications Chemistry
IS - 1
M1 - 19
ER -