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

被引：1

作者：

Song, Bihai ^{[1
]}

Chen, Gong-Hao ^{[1
]}

Springer, Juergen ^{[1
]}

Thyen, Wolfgang ^{[2
]}

Zugenmaier, Peter ^{[2
]}

机构：

[1] Tech Univ Berlin, Inst Tech Chem, Fachgebiet Makromol Chem, D-10623 Berlin, Germany

[2] Tech Univ Clausthal, Inst Phys Chem, D-38678 Clausthal Zellerfeld, Germany

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1998年 / 323卷

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;

D O I：

10.1080/10587259808048434

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

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.

引用

页码：89 / 96

页数：8

共 15 条

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