An investigation of the equilibrium between various forms of oxazine-170 by means of absorption and fluorescence spectroscopy

Raz Gvishi*, Renata Reisfeld

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The quite different spectra of the protonated forms C+ (and C2+ and C3+ in sulphuric acid) and the neutral oxazine-170 molecule are studied in water, methanol, ethanol, tetrahydrofuran and chloroform and the acidity constant pKa of C+ measured. In aqueous solution, C+ shows a marked propensity to dimerize, like rhodamine cations. C+ shows favorable laser characteristics which are dependent on the detailed relative concentrations, temperature and solvent.

Original languageEnglish
Pages (from-to)181-186
Number of pages6
JournalChemical Physics Letters
Volume156
Issue number2-3
DOIs
StatePublished - 31 Mar 1989

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