ISSN:
0360-6376
Keywords:
Physics
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Derivatives of polyethylenimine, containing free primary amines but with secondary and tertiary amines fully quaternized, were prepared. The residual primary amines of the polymer markedly accentuated the rates of cleavage of nitrophenyl esters. This modified polymer exhibits a pKa, determined from kinetics of its reactions, close to that for small molecules with a primary amine adjacent to a charged aminoethyl group. Thus, the primary amine group of the polymer stays relatively distant from all charged nitrogens on the macromolecule except its immediately adjacent neighbor on the chain.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pol.1977.170150310
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