ARE NEMATIC AMPHIPHILIC LIQUID-CRYSTALLINE MESOPHASES THERMODYNAMICALLY STABLE

被引：143

作者：

BODEN, N ^{[1
]}

JACKSON, PH ^{[1
]}

MCMULLEN, K ^{[1
]}

HOLMES, MC ^{[1
]}

机构：

[1] PRESTON POLYTECH,DIV PHYS & ASTRON,PRESTON,ENGLAND

来源：

CHEMICAL PHYSICS LETTERS | 1979年 / 65卷 / 03期

关键词：

D O I：

10.1016/0009-2614(79)80275-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Microscopy and deuterium NMR spectroscopy are employed to demonstrate the existence of a thermodynamically independent nematic amphiphilic mesophase in mixtures of perfluoro-octanoate and water between 37.0 to 87.0% by weight of 2H2O and 284.0 to 348.3 K at 1 atmosphere pressure. This phase is in equilibrium with an isotropic micellar solution and a smeetic lamellars mesophase to, respectively, high and low temperatures. The lamellar to nematic transition line changes from first to second order at a tricritical point corresponding to 42.5% of 2H2O and 328.0 K, whilst the nematic to isotropic micellar solution transition is first order at all compositions. The measurements suggest the nematic phase is a solution of disc shaped micelles which orient with their unique axis parallel to the direction of an applied magnetic field. © 1979.

引用

页码：476 / 479

页数：4

共 12 条

[1]

CHANDRASEKHAR S, 1977, LIQ CRYST, pCH3

[2]

Griffiths R. B., 1970, Physical Review Letters, V24, P715, DOI 10.1103/PhysRevLett.24.715

[3] PROPOSAL FOR NOTATION AT TRICRITICAL POINTS [J].