ISSN:
1022-1352
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
The fluorescence behaviour of a lyotropic liquid-crystalline polyester substituted with sulfonato and nitro groups, poly[potassium oxy(x-sulfonato-1,4-phenylene)oxy(x-nitroterephthaloyl)] (1), was studied in various phases by changing the polymer concentration. This liquid-crystalline polymer is soluble in several organic solvents and water. The observed fluorescence is originated from complexes between the potassium sulfonate-substituted aromatic moiety and the nitro-substituted aromatic moiety, and also from the dimer of the potassium sulfonate-substituted moiety. From the results of fluorescence intensity changes with concentration, the change of phase in this lyotropic liquid-crystalline system is suggested to occur gradually. By comparing the fluorescence behaviour in various phases with those of model compounds, the microstructure of the liquid-crystalline state can be evaluated to some extent.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1996.021970909
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