論文

査読有り
2004年12月

Synthesis and photochemical properties of porphyrin-azobenzene triad

TETRAHEDRON LETTERS
  • T Yamamura
  • ,
  • A Momotake
  • ,
  • T Arai

45
50
開始ページ
9219
終了ページ
9223
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.tetlet.2004.10.076
出版者・発行元
PERGAMON-ELSEVIER SCIENCE LTD

Porphyrin-azo benzene triad E-2, having ester spacers between the chromophores, was synthesized and its photochemical and thermal isomerization properties were investigated. Triad E-2 showed little electronic communication among the chromophores according to a comparison of the steady-state absorption and fluorescence spectra of E-2 and their model compounds. E-2 showed photochemical E-Z isomerization and subsequent thermal Z-to-E isomerization. The porphyrin chromophore in Z-2, obtained by photoisomerization, did not strongly affect the transient state of thermal Z-to-E isomerization of the azobenzene unit. The high E-isomer composition at the photostationary state indicates the occurrence of triplet energy transfer between porphyrin and azobenzene. E-2 forms 1:1 complex with 4,4'-bipyridyl (Bipy). The stability constant for E-2 with Bipy was determined (log K = 4.20 mol(-1) dm(3)) by iterative least-squares fitting to a 1: 1 binding model. (C) 2004 Elsevier Ltd. All rights reserved.

Web of Science ® 被引用回数 : 21

リンク情報
DOI
https://doi.org/10.1016/j.tetlet.2004.10.076
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000225382700015&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.tetlet.2004.10.076
  • ISSN : 0040-4039
  • Web of Science ID : WOS:000225382700015

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