Supramolecular porphyrin assemblies through amidinium-carboxylate salt bridges and fast intra-ensemble excited energy transfer

Joe Otsuki, Kosyo Iwasaki, Yosuke Nakano, Mitsunari Itou, Yasuyuki Araki, Osamu Ito

研究成果: Article査読

54 被引用数 (Scopus)

抄録

Well-defined supramolecular assemblies of Zn and free-base porphyrins are constructed through the formation of amidinium-carboxylate salt bridges. A one-to-one donor-acceptor pair and a four-to-one antenna-type assembly are investigated. The steady-state and time-resolved fluorescence measurements unequivocally showed that efficient singlet-singlet excited energy transfer from the Zn-porphyrin complex to the free-base porphyrin takes place in these assemblies. Indeed, the observed energy-transfer rates in both types of assemblies are much faster than those the Förster mechanism would suggest, implying the involvement of an intermolecular through-bond mechanism.

本文言語English
ページ(範囲)3461-3466
ページ数6
ジャーナルChemistry - A European Journal
10
14
DOI
出版ステータスPublished - 2004 7 19

ASJC Scopus subject areas

  • Catalysis
  • Organic Chemistry

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