Orthogonal orientations for solvation of polymer molecules in smectic solvents

被引：16

作者：

Link, S

Chang, WS

Yethiraj, A

Barbara, PF

机构：

[1] Univ Wisconsin, Dept Chem, Madison, WI 53706 USA

[2] Univ Texas, Dept Chem & Biochem, Austin, TX 78712 USA

[3] Univ Texas, Ctr Nano & Mol Sci & Technol, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 96卷 / 01期

关键词：

D O I：

10.1103/PhysRevLett.96.017801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We explore the solvation of single conjugated polymer molecules in a smectic liquid crystal using single molecule spectroscopy. We find evidence for two distinct orientations for solvation: the majority of polymers are narrowly orientated parallel to the nematic director, as expected, but, unexpectedly, a second population is aligned perpendicular to the director. These molecules reside in the gaps between the layers. This latter type of solvation has not been previously observed and is not expected when the density variation along the director is sinusoidal.

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页数：4

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