MISC

2009年6月

Ultrafast Photodissociation Dynamics of a Hexaarylbiimidazole Derivative with Pyrenyl Groups: Dispersive Reaction from Femtosecond to 10 ns Time Regions

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
  • Hiroshi Miyasaka
  • Yusuke Satoh
  • Yukihide Ishibashi
  • Syoji Ito
  • Yutaka Nagasawa
  • Seiji Taniguchi
  • Haik Chosrowjan
  • Noboru Mataga
  • Daisuke Kato
  • Azusa Kikuchi
  • Jiro Abe
  • 全て表示

131
21
開始ページ
7256
終了ページ
7263
記述言語
英語
掲載種別
DOI
10.1021/ja809195s
出版者・発行元
AMER CHEMICAL SOC

The photodissociation dynamics of a hexaarylbiimidazole (HABI) derivative with two pyrenyl groups was investigated by time-resolved transient absorption spectroscopy and fluorescence measurements. Transient absorption spectroscopy revealed that photodissociation took place in the wide time region of <100 fs to 10 ns. On the other hand, fluorescence time profiles showed the dynamic red shift in the time region <100 ps. The apparent dispersive photodissociation process was attributed to the increase in the interaction between the pyrenyl moiety in the excited state and the other moiety in the ground state, resulting in the gradual increase of the activation energy for the crossing between the attractive potential surface of an excited pyrenyl unit and the repulsive potential surface.

リンク情報
DOI
https://doi.org/10.1021/ja809195s
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000266484900024&DestApp=WOS_CPL
ID情報
  • DOI : 10.1021/ja809195s
  • ISSN : 0002-7863
  • Web of Science ID : WOS:000266484900024

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