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

Raz Gvishi; Renata Reisfeld

doi:10.1016/S0009-2614(89)87116-7

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

Institute of Chemistry

Research output: Contribution to journal › Article › peer-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 pK_a 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 language	English
Pages (from-to)	181-186
Number of pages	6
Journal	Chemical Physics Letters
Volume	156
Issue number	2-3
DOIs	https://doi.org/10.1016/S0009-2614(89)87116-7
State	Published - 31 Mar 1989

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10.1016/S0009-2614(89)87116-7

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

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.",

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N2 - 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.

AB - 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.

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

Abstract

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