A 1,3-phenylene-bridged hexameric porphyrin wheel and efficient excitation energy transfer along the wheel

Hua Wei Jiang, Sujin Ham, Naoki Aratani, Dongho Kim, Atsuhiro Osuka

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15 Citations (Scopus)

Abstract

A 1,3-phenylene-bridged hexameric ZnII porphyrin wheel was synthesized by a Suzuki-Miyaura coupling reaction through a one-pot or a stepwise route. The hexameric wheel structure was revealed by using X-ray diffraction analysis. The porphyrin wheel exhibits a split Soret band due to effective exciton coupling and displays efficient excitation energy transfer along the wheel. Measurements of fluorescence anisotropy decay and pump-power-dependent decay reveal a rapid excitation energy hopping along the wheel with a rate of 1.4 ps. Wheels in motion: A 1,3-phenylene-bridged hexameric ZnII porphyrin wheel (see figure) was synthesized by using a Suzuki-Miyaura coupling reaction through a one-pot or a stepwise route. The porphyrin wheel exhibits a split Soret band due to effective exciton coupling and displays efficient excitation energy transfer along the wheel, which has been probed by pump-power-dependent decay of femtosecond time-resolved transient absorption spectra.

Original languageEnglish
Pages (from-to)13328-13336
Number of pages9
JournalChemistry - A European Journal
Volume19
Issue number40
DOIs
Publication statusPublished - 2013 Sep 27

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All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)
  • Organic Chemistry

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