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Controlled crystallization of CaCO3 under stearic acid monolayers

Citation

Mann, S and Heywood, BR and Rajam, S and Birchall, JD, Controlled crystallization of CaCO3 under stearic acid monolayers, Nature, 334, (6184) pp. 692-695. ISSN 0028-0836 (1988) [Refereed Article]

Copyright Statement

© 1988 Nature Publishing Group

DOI: doi:10.1038/334692a0

Abstract

A fundamental concept in the study of biomineralization concerns the molecular recognition of inorganic materials at organized organic macromolecular substrates. Here we investigate this concept through the use of stearic acid monolayers in the controlled crystallization of CaCO3 from supersaturated solutions. Whereas crystallization in the absence of a monolayer results in rhombohedral calcite crystals, the presence of an organized monolayer gives rise to oriented vaterite formation. The vaterite nuclei are aligned with their (0001) face parallel to the plane of the organic substrate and develop initially in the form of disk-shaped single crystals. The degree of compression of the monolayer dictates the homogeneity of vaterite nucleation. In particular, partially compressed films are optimal for controlled crystallization, suggesting that the mobility of organic surfaces may be of general importance. Our results can be explained by electrostatic and stereochemical interactions at the inorganic–organic interface and these observations support current theories of biomineralization, as well as being of potential significance in the crystal engineering of microscopic inorganic assemblies.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Physical Chemistry (incl. Structural)
Research Field:Structural Chemistry and Spectroscopy
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
Author:Heywood, BR (Professor Brigid Heywood)
ID Code:104352
Year Published:1988
Web of Science® Times Cited:473
Deposited By:Research Division
Deposited On:2015-11-10
Last Modified:2015-12-18
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