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Formation of Giant Needle-Like Polycation-Bile Acid Complexes

✍ Scribed by Tatsuo Kaneko; Ayako Ichikawa; Jian Ping Gong; Yoshihito Osada

Book ID
102493376
Publisher
John Wiley and Sons
Year
2003
Tongue
English
Weight
151 KB
Volume
24
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

The complexation of bile acids with various solvated polycations was studied. A one‐to‐one complex was precipitated when an aqueous solution of cholic acid sodium salt (CA) was mixed with aqueous solutions of 3,3‐ionene and grew to form crystals with needle‐like morphology, 3 millimeters in length. Hydrogen bonding of hydroxyls at the steroid face and the spacing between cationic sites of polycations were crucial for the formation of the giant needle.

Crossed polarizing microscopic photograph of the complex composed of cholic acid sodium salt and 3,3‐ionene.

magnified imageCrossed polarizing microscopic photograph of the complex composed of cholic acid sodium salt and 3,3‐ionene.

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