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Organic template-directed inorganic crystallization: Oriented nucleation of BaSO4 under compressed langmuir monolayers

Citation

Heywood, BR and Mann, S, Organic template-directed inorganic crystallization: Oriented nucleation of BaSO4 under compressed langmuir monolayers, Journal of the American Chemical Society, 114, (12) pp. 4681-4686. ISSN 0002-7863 (1992) [Refereed Article]

Copyright Statement

Copyright 1992 American Chemical Society

DOI: doi:10.1021/ja00038a034

Abstract

Langmuir monolayers of n-eicosyl sulfate were shown to influence the nucleation of BaSO4 grown from supersaturated solutions (S = 30) at room temperature (293 K). Thin, elongated single crystalline plates were nucleated with the (100) face parallel to the plane of the monolayer. Partial matching of cation-cation distances with the interheadgroup spacings and stereochemical complementarity between the anionic motif and sulfate headgroups are potential factors responsible for oriented nucleation. The oriented crystals exhibited an unusual texture of coherently intergrown rhombic subunits which was attributable to monolayer-induced growth along specific lattice directions parallel to the monolayer/solution interface. By contrast, barium sulfate crystals nucleated under compressed eicosanoic acid monolayers were oriented along the [010] direction. These crystals were irregular in morphology, suggesting a kinetic rather than a structural influence of the organic template on nucleation at the monolayer/solution interface.

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:104415
Year Published:1992
Web of Science® Times Cited:130
Deposited By:Research Division
Deposited On:2015-11-11
Last Modified:2015-12-21
Downloads:0

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