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Surface Phenomena of Liquid Crystalline Substances - Temperature Dependence of Surface Tension of 4,4′-di-n-undecanoyloxybiphenyl

 

作者: Bihai Song,   Gong-Hao Chen,   Jürgen Springer,   Wolfgang Thyen,   Peter Zugenmaier,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  （Taylor Available online 1998）
卷期: Volume 323, issue 1  

页码: 89-96

 

ISSN:1058-725X

 

年代: 1998

 

DOI:10.1080/10587259808048434

 

出版商: Taylor & Francis Group

 

关键词: Surface tension;temperature dependence of surface tension;anomaly in surface tension-temperature dependence;pretransitional order;surface phenomena;liquid crystals;4,4′-di-n-undecanoyloxybiphenyl;4,4′-di-n-alkanoyloxybiphenyls

 

数据来源: Taylor

 

摘要:

The surface tension of 4,4′-di-n-undecanoyloxybiphenyl has been determined as a function of temperature. A distinct deviation of its temperature dependence from the normal behavior was observed below a certain inversion temperature. The surface tension of the isotropic sample decreases sharply as the falling temperature approaches the underlying bulk phase transition point. The formation of some highly ordered structures at the liquid surface is revealed, which is consistent with the suggestion that the existence of an underlying highly ordered phase favors the pretransitional surface ordering of molecules at the free surface of an isotropic phase.

 

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