MISC

2010年

Multiphoton-gated cycloreversion reactions of photochromic diarylethene derivatives with low reaction yields upon one-photon visible excitation

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
  • Yukihide Ishibashi
  • ,
  • Katsuki Okuno
  • ,
  • Chikashi Ota
  • ,
  • Toshiyuki Umesato
  • ,
  • Tetsuro Katayama
  • ,
  • Masataka Murakami
  • ,
  • Seiya Kobatake
  • ,
  • Masahiro Irie
  • ,
  • Hiroshi Miyasaka

9
2
開始ページ
172
終了ページ
180
記述言語
英語
掲載種別
DOI
10.1039/b9pp00116f
出版者・発行元
ROYAL SOC CHEMISTRY

Cycloreversion processes of three photochromic diarylethene derivatives with extremely low one-photon reaction yields (5.0 x 10(-5) to 1.5 x 10(-2)) were investigated by means of femtosecond and picosecond laser photolysis methods. Femtosecond visible laser photolysis revealed that the excited state of the closed form in these three derivatives decayed into the ground state with 0.7-8 ps time constants and with low cycloreversion yields that were consistent with those obtained by steady-state light irradiation. On the other hand, the cycloreversion reaction was drastically enhanced by picosecond 532 nm laser excitation for all of the three derivatives. From excitation intensity effects of the reaction yield and dynamic behavior, it was found that the successive two-photon absorption process leading to higher excited states opened an efficient cycloreversion channel, with reaction yields of 0.3 0.5. These results are discussed from the viewpoint of the one-photon inerasable but two-photon erasable photochromic system.

リンク情報
DOI
https://doi.org/10.1039/b9pp00116f
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000274243400009&DestApp=WOS_CPL
ID情報
  • DOI : 10.1039/b9pp00116f
  • ISSN : 1474-905X
  • eISSN : 1474-9092
  • Web of Science ID : WOS:000274243400009

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