Face-on Oriented Bilayer of Two Discotic Columnar Liquid Crystals for Organic Donor−Acceptor Heterojunction

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• 作者：Olivier Thiebaut ; Harald Bock ; Eric Grelet
• 刊名：Journal of the American Chemical Society
• 出版年：2010
• 出版时间：May 26, 2010
• 年：2010
• 卷：132
• 期：20
• 页码：6886-6887
• 全文大小：147K
• 年卷期：v.132,no.20(May 26, 2010)
• ISSN：1520-5126

文摘

In this work, we report the achievement of a homeotropically (or face-on) oriented bilayer formed by a pair of discotic materials designed with specific properties: selective solubility, adjusted transition temperatures, and room temperature hexagonal columnar liquid-crystalline phase. The homeotropic orientation of the bilayer which is only a few hundred nanometers thick is performed by solution-processed deposition followed by thermal annealing in the geometry of open supported films and is evidenced by X-ray scattering. This represents the first proof of principle of an organic heterojunction based on two oriented columnar liquid crystal layers.