Highly anisotropic elasticity of a dendrimeric liquid crystal

被引：6

作者：

Jin, AJ ^{[1
]}

Fisch, MR ^{[1
]}

Mahajan, MP ^{[1
]}

Crandall, KA ^{[1
]}

Chu, P ^{[1
]}

Huang, CY ^{[1
]}

Percec, V ^{[1
]}

Petschek, RG ^{[1
]}

Rosenblatt, C ^{[1
]}

机构：

[1] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA

来源：

EUROPEAN PHYSICAL JOURNAL B | 1998年 / 5卷 / 02期

关键词：

D O I：

10.1007/s100510050442

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Magnetic and electrical Freedericksz measurements were performed on the second generation monodendritic liquid crystal G(2)(OH). The deduced elastic constants were found to be exceptionally anisotropic: the splay elastic constant K-11 is more than an order of magnitude larger than the bend elastic constant K-33, and the twist constant K-22 is approximately twice K-33. The results are discussed in terms of molecular conformations.

引用

页码：251 / 255

页数：5

共 23 条

[1] THEORY OF THE STRIPE PHASE IN BEND-FREEDERICKSZ-GEOMETRY NEMATIC FILMS [J].

ALLENDER, DW ;

HORNREICH, RM ;

JOHNSON, DL .

PHYSICAL REVIEW LETTERS, 1987, 59 (23) :2654-2657

[2]

ARDOIN N, 1995, B SOC CHIM FR, V132, P875

[3] Rational design of the first spherical supramolecular dendrimers self-organized in a novel thermotropic cubic liquid-crystalline phase and the determination of their shape by X-ray analysis [J].

Balagurusamy, VSK ;

Ungar, G ;

Percec, V ;

Johansson, G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1997, 119 (07) :1539-1555

[4]

DEGENNES PG, 1993, PHYSICS LIQUID CRYST

[5]

DILISI GA, 1992, J PHYS II, V2, P1065, DOI 10.1051/jp2:1992186

[6]

DILISI GA, 1993, J PHYS II, V3, P597, DOI 10.1051/jp2:1993153

[7] FUNCTIONAL POLYMERS AND DENDRIMERS - REACTIVITY, MOLECULAR ARCHITECTURE, AND INTERFACIAL ENERGY [J].

FRECHET, JMJ .

SCIENCE, 1994, 263 (5154) :1710-1715

[8]

GU D, 1993, J PHYS II, V3, P937, DOI 10.1051/jp2:1993232

[9] Direct visualization of individual cylindrical and spherical supramolecular dendrimers [J].

Hudson, SD ;

Jung, HT ;

Percec, V ;

Cho, WD ;

Johansson, G ;

Ungar, G ;

Balagurusamy, VSK .

SCIENCE, 1997, 278 (5337) :449-452

[10]

ISSBERNER J, 1994, ANGEW CHEM INT EDIT, V33, P2413

← 1 2 3 →