Characterization of lyotropic liquid crystals formed in the mixtures of 1-alkyl-3-methylimidazolium bromide/p-xylene/water

被引：37

作者：

Li, Xin-Wei ^{[1
]}

Zhang, Jin ^{[1
]}

Dong, Bin ^{[1
]}

Zheng, Li-Qiang ^{[1
]}

Tung, Chen-Ho ^{[2
]}

机构：

[1] Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China

[2] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2009年 / 335卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

Ionic liquid; Lyotropic liquid crystal; Ternary phase diagram; SAXS; POM; H-2; NMR; Rheology; BICONTINUOUS CUBIC PHASES; TEMPERATURE IONIC LIQUIDS; BEHAVIOR; WATER; AGGREGATION; OIL; EQUILIBRIA; SOLVENTS; CHLORIDE; SYSTEM;

D O I：

10.1016/j.colsurfa.2008.10.031

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：

1-Alkyl-3-methylimidazolium bromide (C(n)mimBr), are substituted for surfactants and formed lyotropic liquid crystalline phases with p-xylene and water. Small angle X-ray scattering (SAXS), polarized optical microscopy (POM), H-2 nuclear magnetic response (H-2 NMR) and rheological measurement were performed to investigate the lyotropic liquid crystalline phases. A lyotropic bicontinuous cubic phase formed in imidazolium-type ionic liquid (IL) system was found for the first time. Moreover, the effect of chain length of C(n)mimBr on the phase behavior, structural parameters and rheological properties was studied. The strong "pi-pi stacking" of imidazolium based ILs and their "pi-cation" interactions with p-xylene molecules have unique effect on the structural parameters, especially the thickness of the water channel (d(W)). (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：80 / 87

页数：8

共 54 条

[1] Structural polymorphism of amphiphilic copolymers: Six lyotropic liquid crystalline and two solution phases in a poly(oxybutylene)-b-poly(oxyethylene)-water-xylene system [J].

Alexandridis, P ;

Olsson, U ;

Lindman, B .

LANGMUIR, 1997, 13 (01) :23-34

[2] Surfactant solvation effects and micelle formation in ionic liquids [J].

Anderson, JL ;

Pino, V ;

Hagberg, EC ;

Sheares, VV ;

Armstrong, DW .

CHEMICAL COMMUNICATIONS, 2003, (19) :2444-2445

[3]

BATCHELDER LS, 1996, DEUTERIUM NMR SOLIDS, V13

[4] Complex polyion-surfactant ion salts in equilibrium with water: Changing aggregate shape and size by adding oil [J].

Bernardes, Juliana S. ;

Norrman, Jens ;

Piculell, Lennart ;

Loh, Watson .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (46) :23433-23442

[5] Enhanced resonator sensitivity with nanostructured porous silica coatings [J].

Bhansali, S. H. ;

Jarvis, J. M. ;

Aksay, I. A. ;

Carbeck, J. D. .

LANGMUIR, 2006, 22 (15) :6676-6682

[6] Aggregation behavior of aqueous solutions of ionic liquids [J].

Bowers, J ;

Butts, CP ;

Martin, PJ ;

Vergara-Gutierrez, MC ;

Heenan, RK .

LANGMUIR, 2004, 20 (06) :2191-2198

[7] Liquid-crystalline ionic liquids [J].

Bowlas, CJ ;

Bruce, DW ;

Seddon, KR .

CHEMICAL COMMUNICATIONS, 1996, (14) :1625-1626

[8] Small-angle X-ray scattering studies of liquid crystalline 1-alkyl-3-methylimidazolium salts [J].

Bradley, AE ;

Hardacre, C ;

Holbrey, JD ;

Johnston, S ;

McMath, SEJ ;

Nieuwenhuyzen, M .

CHEMISTRY OF MATERIALS, 2002, 14 (02) :629-635

[9] Surface adsorption and micelle formation of surface active ionic liquids in aqueous solution [J].

Dong, Bin ;

Li, Na ;

Zheng, Liqiang ;

Yu, Li ;

Inoue, Tohru .

LANGMUIR, 2007, 23 (08) :4178-4182

[10] Existence and stability of new nanoreactors:: Highly swollen hexagonal liquid crystals [J].

dos Santos, EP ;

Tokumoto, MS ;

Surendran, G ;

Remita, H ;

Bourgaux, C ;

Dieudonné, P ;

Prouzet, E ;

Ramos, L .

LANGMUIR, 2005, 21 (10) :4362-4369

← 1 2 3 4 5 6 →