ISSN:
0377-0486
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Resonance Raman spectra of insoluble (or spread) monolayers of cetyl orange on a water surface have been obtained by the use of a total reflection method previously proposed. The spectra of the monolayers resemble that of solid cetyl orange rather than that of the chloroform solution, suggesting that the structure of cetyl orange in the monolayer is similar to that in the solid state. From polarization measurements of the spectra, the molecular orientation in the monolayers has been examined at various surface pressures. The molecules in the insoluble monolayers show a higher orientation with respect to the vertical axis as compared with those in soluble (or adsorbed) monolayers. The degree of molecular orientation rises with an increase in surface pressure of the monolayers but decreases considerably upon collapse.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jrs.1250080307
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