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Ternary Complex Formation in Aqueous Solution between a β-Cyclodextrin Polymer, a Cationic Surfactant and DNA

✍ Scribed by Céline Galant; Catherine Amiel; Loïc Auvray

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
192 KB
Volume
5
Category
Article
ISSN
1616-5187

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✦ Synopsis

Abstract

Summary: Polyelectrolyte complexes have been elaborated by mixing in water neutral poly(β‐CD), a cationic surfactant (DTAC) and herring sperm DNA fragments. The driving forces for the poly(β‐CD)/DTAC/DNA association in aqueous solution are, on the one hand, reversible inclusion interactions between the CD cavities of poly(β‐CD) and the alkyl group of DTAC, leading to the formation of a polycation and, on the other hand, electrostatic interactions between the opposite charges of the cationic surfactant and anionic DNA. Viscometry and SANS have been used to prove the occurrence of such ternary complexes in dilute aqueous solutions.
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