7-Alkoxy coumarins as fluorescence probes for microenvironments

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Abstract

7-Alkoxy and 4-methyl-7-alkoxy coumarins show solvent-dependent fluorescence emission. The monomeric fluorescence emission of these alkoxy coumarins was exploited as a probe to measure the surface polarity of the micelles formed by ionic (sodium dodecylsulphate and cetyltrimethyl-ammonium bromide) and non-ionic (Triton X-100) detergents. By comparing the solvent-dependent fluorescence of these alkoxy coumarins in various homogeneous solvents, the polarity of the micelles was determined qualitatively. All three micelles are more polar than hydrocarbon solvents but are less polar than water.

Original languageEnglish
Pages (from-to)57-64
Number of pages8
JournalJournal of Photochemistry
Volume26
Issue number1
DOIs
StatePublished - Jan 1 1984
Externally publishedYes

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Coumarins
Micelles
Fluorescence
Octoxynol
Hydrocarbons
Detergents
Sodium
alkoxyl radical
Water

Cite this

7-Alkoxy coumarins as fluorescence probes for microenvironments. / Muthuramu, K.; Ramamurthy, Vaidhyanathan.

In: Journal of Photochemistry, Vol. 26, No. 1, 01.01.1984, p. 57-64.

Research output: Contribution to journalArticle

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