Dihedral-angle modulation of meso-meso-linked ZnII diporphyrin through diamine coordination and its application to reversible switching of excitation energy transfer

Hideyuki Shinmori, Tae Kyu Ahn, Hyun Sun Cho, Dongho Kim, Naoya Yoshida, Atsuhiro Osuka

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The dihedral angle between the two porphyrins in meso-meso-linked ZnII diporphyrin can be modulated effectively by adding 1,7-diaminoheptane, which coordinates at the both ZnII centers (see picture). This mechanical torsion gives rise to a decrease in the energy of the S1 state in the meso-meso-linked ZnII-diporphyrin subunit, and results in the change in direction of the energy transfer in the excited state. This process can be reversed by adding acetic acid.

Original languageEnglish
Pages (from-to)2754-2758
Number of pages5
JournalAngewandte Chemie - International Edition
Volume42
Issue number24
DOIs
Publication statusPublished - 2003 Jun 23

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Cite this