Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1237793 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2008 | 5 Pages |
Abstract
This paper reports the spectral properties and protolytic behavior of the fluorescent dye N,N′-dioctadecylrhodamine on the micelle/water and microdroplet/water interfaces as well as in Langmuir–Blodgett films soaked into aqueous media. Long hydrocarbon chains provide similar orientation of its cation and zwitterion, with the dissociating group (COOH → COO−) directed toward the bulk (aqueous) phase. Both absorption and fluorescence of the dye can be used for monitoring electrical surface potentials and for determination of bulk pH.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
N.O. Mchedlov-Petrossyan, N.A. Vodolazkaya, O.N. Bezkrovnaya, A.G. Yakubovskaya, A.V. Tolmachev, A.V. Grigorovich,