Effect of hydroxylic compounds on the photophysical properties of ellipticine and its 6-methyl derivative: The origin of dual fluorescence

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22 Citations (Scopus)

Abstract

Photophysical parameters of ellipticine were compared to those of its 6-methyl derivative in various solvents. Since both compounds emitted dual fluorescence in methanol and ethylene glycol, the band peaking at low energy cannot be due to a tautomer formed via solvent-assisted excited-state proton transfer but originates from photoinduced protonation by the solvent. The mechanism and kinetics of the processes undergoing in the excited-state in the presence of OH- were revealed in methanol. Addition of OH- caused quenching for the excited ellipticine, whereas back-formation of the neutral excited compound proved to be the only important photochemical reaction of the protonated species.

Original languageEnglish
Pages (from-to)76-81
Number of pages6
JournalChemical Physics Letters
Volume427
Issue number1-3
DOIs
Publication statusPublished - Aug 18 2006

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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