Efficiency of singlet oxygen generation from the triplet states of nitrophenyl ethers

Miquel Mir, Lisinka M.G. Jansen, Francis Wilkinson, Jose L. Bourdelande, Jordi Marquet

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17 Citations (Scopus)

Abstract

The bimolecular rate constants for oxygen quenching, kTO2, and the quantum yields of singlet oxygen production, φΔ, for 4-nitroveratrole, 4-nitroanisole and 3-nitroanisole triplet states in air-equilibrated deuterated water and acetonitrile solutions were determined where possible from nanosecond laser flash photolysis and time-resolved O2 (1Δg) phosphorescence measurements. The results show that the efficiency of singlet oxygen production, fΔT, for 4-nitroveratrole and 3-nitroanisole is moderately high and is related with the nature of the low-lying triplet state and that 4-nitroanisole is not able to sensitize singlet oxygen under these conditions. © 1998 Elsevier Science S.A.
Original languageEnglish
Pages (from-to)113-117
JournalJournal of Photochemistry and Photobiology A: Chemistry
Volume113
Issue number2
DOIs
Publication statusPublished - 28 Feb 1998

Keywords

  • Acetonitrile solution
  • Nitrophenyl ether
  • Oxygen quenching

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