Rarely observed phase transitions in a novel lyotropic liquid crystal system

被引:56
作者
Katsaras, J
Donaberger, RL
Swainson, IP
Tennant, DC
Tun, Z
Vold, RR
Prosser, RS
机构
[1] MCMASTER UNIV,DEPT PHYS,HAMILTON,ON,CANADA
[2] UNIV CALIF SAN DIEGO,DEPT CHEM & BIOCHEM,LA JOLLA,CA 92093
关键词
D O I
10.1103/PhysRevLett.78.899
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
This Letter presents neutron diffraction data from a novel, biologically relevant, lyotropic membrane system which is highly alignable (less than or equal to 1.0 degrees mosaic) in a magnetic field and gives rise to a number of well-defined Bragg reflections. The system, composed of two different phosphorylcholine lipids, undergoes a rare nematic --> smectic phase transition upon doping the system with paramagnetic ions (e.g., 2.7 wt% Tm3+). In addition, the isotropic phase occurs at a lower temperature than the smectic phase, in contrast to other lyotropic systems and in contrast to the phase behavior predicted by the McMillan model [Phys. Rev. A 4, 1238 (1971)] of smectic ordering.
引用
收藏
页码:899 / 902
页数:4
相关论文
共 26 条
[1]   X-RAY-DIFFRACTION BY LIQUID-CRYSTALS [J].
AZAROFF, LV .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1980, 60 (1-2) :73-97
[2]   ELECTRICAL-CONDUCTIVITY IN MACROSCOPICALLY ALIGNED NEMATIC AND LAMELLAR MESOPHASES OF THE CESIUM PERFLUORO-OCTANOATE-WATER SYSTEM [J].
BODEN, N ;
CORNE, SA ;
JOLLEY, KW .
CHEMICAL PHYSICS LETTERS, 1984, 105 (01) :99-103
[3]   ARE NEMATIC AMPHIPHILIC LIQUID-CRYSTALLINE MESOPHASES THERMODYNAMICALLY STABLE [J].
BODEN, N ;
JACKSON, PH ;
MCMULLEN, K ;
HOLMES, MC .
CHEMICAL PHYSICS LETTERS, 1979, 65 (03) :476-479
[4]   LAMELLAR NEMATIC TRICRITICAL BEHAVIOR IN LYOTROPIC LIQUID-CRYSTALS [J].
BODEN, N ;
HOLMES, MC .
CHEMICAL PHYSICS LETTERS, 1984, 109 (01) :76-80
[5]   3D XY BEHAVIOR OF A NEMATIC-SMECTIC-A PHASE-TRANSITION - CONFIRMATION OF THE DEGENNES MODEL [J].
BOUWMAN, WG ;
DEJEU, WH .
PHYSICAL REVIEW LETTERS, 1992, 68 (06) :800-803
[6]  
CHEN L, 1991, PHYS REV LETT, V67, P2037
[7]   NEW LYOTROPIC LIQUID-CRYSTALS COMPOSED OF FINITE NONSPHERICAL MICELLES [J].
FORREST, BJ ;
REEVES, LW .
CHEMICAL REVIEWS, 1981, 81 (01) :1-14
[8]   Small angle x-ray scattering studies of magnetically oriented lipid bilayers [J].
Hare, BJ ;
Prestegard, JH ;
Engelman, DM .
BIOPHYSICAL JOURNAL, 1995, 69 (05) :1891-1896
[9]   STRUCTURE OF THE RIPPLE PHASE P-BETA' IN HYDRATED PHOSPHATIDYLCHOLINE MULTIMEMBRANES [J].
HENTSCHEL, MP ;
RUSTICHELLI, F .
PHYSICAL REVIEW LETTERS, 1991, 66 (07) :903-906
[10]   SMECTIC NEMATIC TRANSITION IN A LYOTROPIC LIQUID-CRYSTAL [J].
HOLMES, MC ;
CHARVOLIN, J .
JOURNAL OF PHYSICAL CHEMISTRY, 1984, 88 (04) :810-818