ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The binding of acid azo dyes having phenolic hydroxyl groups such as orange I (I), orange II (II), chrome violet (III), 4-hydroxyazobenzene-4′-sulfonate (IV), and 2,4-dihydroxyazobenzene-4′-sulfonate (V) by polyethylenimine was studied by equilibrium dialysis and spectroscopic methods. The results obtained indicate that dyes (III) and (V) with two OH groups are bound much more strongly than dyes (I), (II), and (IV) with one OH group. Also polyethylenimine is far superior to any other polymers which have been examined, including bovine serum albumin, polyvinylpyrrolidone, and poly-L-lysine, in its ability to form complexes with these dyes (III) and (V). The OH groups involved participate preferentially in complex formation with polyethylenimine. The unusual affinity of polyethylenimine for the dyes carrying OH groups is discussed.
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1985.170230105
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