Concentration quenching of proflavine hydrochloride in dry films of sodium deoxyribonucleate and poly (vinyl alcohol)

G. Strauss, S. B. Broyde, T. Kurucsev

Research output: Contribution to journalArticle

Abstract

Concentration quenching of proflavine hydrochloride was studied in dry films of sodium deoxyribonucleate (DNA) and poly(vinyl alcohol) (PVA) by measuring the decline of flash-induced triplet formation with increasing dye concentration. The quencher was identified as the dimeric species of proflavine. The quenching of the excited singlet state may be interpreted in terms of long-range Förster-type energy-transfer mechanism. Critical donor-acceptor distances were found to be 33.5 and 46.3 Å in DNA and PVA, respectively; these differences may be explained by consideration of the polymer-dye interactions.

Original languageEnglish (US)
Pages (from-to)2727-2733
Number of pages7
JournalJournal of physical chemistry
Volume75
Issue number18
DOIs
StatePublished - 1971

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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