Structural Study of the Micellar Aggregates of Sodium Taurodeoxycholate

Autor:	Adalberto Bonincontro and, Edoardo Giglio, G. Briganti, and Luciano Galantini, Angelo Antonio D’Archivio
Rok vydání:	1997
Předmět:	Circular dichroism Aggregation number Aqueous solution Electromotive force Sodium Analytical chemistry chemistry.chemical_element Surfaces Coatings and Films Rubidium chemistry Helix Micellar solutions Materials Chemistry Physical and Theoretical Chemistry
Zdroj:	Scopus-Elsevier
ISSN:	1520-5207 1520-6106
Popis:	Previously, fibers of sodium and rubidium salts of glycodeoxycholic and taurodeoxycholic acids have been drawn from aqueous micellar solutions. Their X-ray patterns have been interpreted by means of very similar unit cell parameters and helical structures, formed by trimers, having a 3-fold rotation axis, arranged in 7/1 helices. Micellar aggregates with an aggregation number N ≤ 12 and ≥ 15, having oblate and cylindrical (7/1 helix) shape, respectively, have been proposed for sodium taurodeoxycholate (NaTDC) and satisfactorily verified by means of electromotive force and quasi-elastic light-scattering (QELS) measurements. The aim of this paper is to further check this two-structure model by means of QELS, circular dichroism (CD), and dielectric measurements on NaTDC aqueous solutions within concentration and temperature ranges 10−100 mM and 5−45 °C. The average intensity scattered by the NaTDC samples does not depend on the temperature and can be fitted by two straight lines, which intersect at a concent...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be3e20f5e8cf40d907f9fc597a6c9f98 https://doi.org/10.1021/jp964004v Zobrazit plný text záznamu