7-Alkoxy coumarins as fluorescence probes for microenvironments

K. Muthuramu, V. Ramamurthy

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


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 (US)
Pages (from-to)57-64
Number of pages8
JournalJournal of Photochemistry
Issue number1
StatePublished - Jul 1984
Externally publishedYes


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