Photo-triggered phase transition of a crystal

Takuya Taniguchi, Hiroyasu Sato, Yuki Hagiwara, Toru Asahi, Hideko Koshima

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number19
JournalCommunications Chemistry
Volume2
Issue number1
DOIs
Publication statusPublished - 2019 Dec 1

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Phase Transition
phase transition
Phase transitions
crystal
Crystals
Hot Temperature
Single crystals
Light
Photoisomerization
Electromagnetic Fields
Temperature
Metastable phases
Transition Temperature
Energy barriers
electromagnetic field
Isomerization
crystal structure
Heating
Electromagnetic fields
Superconducting transition temperature

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry
  • Environmental Chemistry
  • Biochemistry

Cite this

Photo-triggered phase transition of a crystal. / Taniguchi, Takuya; Sato, Hiroyasu; Hagiwara, Yuki; Asahi, Toru; Koshima, Hideko.

In: Communications Chemistry, Vol. 2, No. 1, 19, 01.12.2019.

Research output: Contribution to journalArticle

Taniguchi, Takuya ; Sato, Hiroyasu ; Hagiwara, Yuki ; Asahi, Toru ; Koshima, Hideko. / Photo-triggered phase transition of a crystal. In: Communications Chemistry. 2019 ; Vol. 2, No. 1.
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