Dynamic redox systems based on bis(spiroxanthene)-type donors with a polycyclic aromatic hydrocarbon: Preparation, X-ray structures, and electrochromic response with fluorescence change

Takanori Suzuki, Shoko Tanaka, Hiroki Higuchi, Hidetoshi Kawai, Kenshu Fujiwara

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

The long C-C bonds (1.614(2)-1.630(2) Å) in newly prepared title donors 2-6 are cleaved upon two-electron oxidation to afford the bond-dissociated dicationic dyes 2 2+-6 2+, whose electron affinities are stronger than the corresponding biphenyl-2,2′-diyl dications 1 2+ due to the spatial proximity of two xanthenylium units. Not only UV-vis but also fluorescence spectra changed drastically upon electrolysis since only colorless neutral donors are fluorescent.

Original languageEnglish
Pages (from-to)8563-8567
Number of pages5
JournalTetrahedron Letters
Volume45
Issue number46
DOIs
Publication statusPublished - Nov 8 2004

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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