MISC

2008年7月31日

Dynamics of cyclization, cycloreversion, and multiphoton-gated reaction of a photochromic diarylethene derivative in crystalline phase

Journal of Physical Chemistry C
  • Kensuke Tani
  • ,
  • Yukihide Ishibashi
  • ,
  • Hiroshi Miyasaka
  • ,
  • Seiya Kobatake
  • ,
  • Masahiro Irie

112
30
開始ページ
11150
終了ページ
11157
記述言語
英語
掲載種別
DOI
10.1021/jp8003272

Cyclization and cycloreversion reactions of a photochromic diarylethene derivative, bis(2-methyl-5phenylthiophen-3-yl)perfluorocyclopentene, in crystalline phase were investigated by means of picosecond laser spectroscopy. Rapid cyclization within a few picoseconds, as comparable to that in solution phase, was confirmed for the colorization reaction in the crystalline phase. On the other hand, cycloreversion reaction took place with a time constant of 25 ps. In addition, nonlinear enhancement of the cycloreversion process was observed. The excitation intensity dependence of the reaction profiles and the correlation of the apparent reaction yield with the time interval of two pulses employed for the excitation clearly revealed that the successive two-photon absorption process via the S1 state, leading to higher excited states, opened the efficient cycloreversion process. The dynamics and mechanisms of the multiphoton-gated reaction in the crystalline phase were discussed by comparing the present results with those in solution phase. © 2008 American Chemical Society.

リンク情報
DOI
https://doi.org/10.1021/jp8003272
ID情報
  • DOI : 10.1021/jp8003272
  • ISSN : 1932-7447
  • ISSN : 1932-7455
  • SCOPUS ID : 49449094648

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