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Effect of Alkyl Spacer in the Betaine Moiety of Polycarboxybetaines on Their Complexing With Poly(methacrylic acid) and DNA

✍ Scribed by Vladimir A. Izumrudov; Natalya I. Domashenko; Marina V. Zhiryakova; Anna A. Rakhnyanskaya

Book ID: 102498236
Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 100 KB
Volume: 26
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200500169

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✦ Synopsis

Abstract

Summary: The affinity of polybetaines of pyridiniocarboxylate structure that differed by the number n of methylene groups in the betaine moieties (n = 1, 2, 4, and 5) to the tagged poly(methacrylic acid) or DNA was estimated by fluorescence quenching techniques. The revealed irregular change of the affinity with increase in n and the pronounced pH‐induced stabilization of the complexes in neutral media may be particularly beneficial in the development of (bio)separation techniques.

pH‐Dependence of stability of PCB‐n complexes with poly(methacrylic acid) in water‐salt solutions presented in relative units.

magnified imagepH‐Dependence of stability of PCB‐n complexes with poly(methacrylic acid) in water‐salt solutions presented in relative units.

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