Surface-induced chirality in a self-assembled monolayer of discotic liquid crystal

被引：149

作者：

Charra, F ^{[1
]}

Cousty, J ^{[1
]}

机构：

[1] Ctr Etud Saclay, Serv Rech Surfaces & Irradiat Mat, Dept Rech Etat Condense Atomes & Mol, Commissariat Energie Atom,Direct Sci Mat, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.80.1682

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the observation by scanning tunneling microscopy of the emergence of chirality through the self-assembly into monolayers of nonchiral discotic liquid crystals, hexakis-2,3,6,7,10,11-alkyloxytriphenylene. on the nonchiral surface of highly oriented pyrolitic graphite. A chiral ordering transition appears when increasing the triangular aspect ratio of the molecules, through the tuning of alkoxy-side-chain length. The mechanism of this symmetry breaking, which involves steric hindrance, superlattice formation, and conformational mobility, can be understood in the light of a simple frustrated triangular Ising net. [S0031-9007(98)05401-5].

引用

页码：1682 / 1685

页数：4

共 20 条

[1] MOLECULAR-STRUCTURE AND DYNAMICS WITHIN SELF-ASSEMBLED HEXAKISALKOXY-TRIPHENYLENE MONOLAYERS AND ALKANE WETTING FILMS [J].