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Science 10 June 1994:
Vol. 264. no. 5165, pp. 1566 - 1570
DOI: 10.1126/science.264.5165.1566
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Articles

Control of Structure and Growth of Polymorphic Crystalline Thin Films of Amphiphilic Molecules on Liquid Surfaces

Susan P. Weinbach 1, Kristian Kjaer 2, Wim G. Bouwman 2, Gerhard Grübel 3, Jean-François Legrand 3, Jens Als-Nielsen 4, Meir Lahav 1, and Leslie Leiserowitz 1

1 Department of Materials and Interfaces, Weizmann Institute of Science, 76100 Rehovot, Israel
2 Physics Department, Risø National Laboratory, DK4000 Roskilde, Denmark
3 Experiments Division, European Synchrotron Radiation Facility, Grenoble, France
4 Physics Department, Risø National Laboratory, DK4000 Roskilde, Denmark, and Experiments Division, European Synchrotron Radiation Facility, Grenoble, France

The spontaneous formation and coexistence of crystalline polymorphic trilayer domains in amphiphilic films at air-liquid interfaces is demonstrated by grazing incidence synchrotron x-ray diffraction. These polymorphic crystallites may serve as models for the early stages of crystal nucleation and growth, helping to elucidate the manner in which additives influence the progress of crystal nucleation, growth, and polymorphism and suggesting ways of selectively generating and controlling multilayers on liquid surfaces. Auxiliary molecules have been designed to selectively inhibit development of the polymorphs, leading primarily to a single phase monolayer.

Submitted on January 24, 1994
Accepted on April 14, 1994


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Crystalline Polymorph Construction: Correction.
L. Leiserowitz (1994)
Science 266, 1791-1792
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Science. ISSN 0036-8075 (print), 1095-9203 (online)