Intermolecular photoinduced proton transfer in nile blue and oxazine 720

A. Grofcsik, M. Kubinyi, W. Jeremy Jones

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

The S1 excited state lifetimes of laser dyes nile blue (NB) and oxazine 720 (OX) have been determined in acidic aqueous solutions as functions of pH. The decay constants show a linear dependence on [H+], with an identical slope for both molecules. The reason for the faster decay in acidic solutions results from the formation of dications by reaction of excited state monocations with hydrogen ions. These results suggest that in the excited state reaction the additional proton locates on the ring nitrogen atom rather than on the terminal amino groups.

Original languageEnglish
Pages (from-to)261-265
Number of pages5
JournalChemical Physics Letters
Volume250
Issue number3-4
Publication statusPublished - Mar 1 1996

Fingerprint

Oxazines
Proton transfer
Excited states
protons
Protons
excitation
Dye lasers
decay
hydrogen ions
dye lasers
nitrogen atoms
Nitrogen
slopes
aqueous solutions
life (durability)
Atoms
Molecules
rings
Nile Blue
molecules

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

Intermolecular photoinduced proton transfer in nile blue and oxazine 720. / Grofcsik, A.; Kubinyi, M.; Jones, W. Jeremy.

In: Chemical Physics Letters, Vol. 250, No. 3-4, 01.03.1996, p. 261-265.

Research output: Contribution to journalArticle

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