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Formation of Giant Needle‐Like Polycation‐Bile Acid Complexes
Author(s) -
Kaneko Tatsuo,
Ichikawa Ayako,
Gong Jian Ping,
Osada Yoshihito
Publication year - 2003
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200350027
Subject(s) - cholic acid , aqueous solution , salt (chemistry) , cationic polymerization , chemistry , sodium , sodium salt , polyelectrolyte , polymer chemistry , colloid , bile acid , hydrogen bond , inorganic chemistry , organic chemistry , molecule , polymer , biochemistry
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.