Dicationic imidazolium-based ionic liquids and ionic liquid crystals with variously positioned fluoro substituents

被引：52

作者：

Li, Xiaoju ^{[1
]}

Bruce, Duncan W. ^{[2
]}

Shreeve, Jean'ne M. ^{[1
]}

机构：

[1] Univ Idaho, Dept Chem, Moscow, ID 83844 USA

[2] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 43期

关键词：

DIALKYLDIMETHYLAMMONIUM BROMIDES; COLUMNAR; DERIVATIVES; PHASES; MOLECULES; SALTS; POLYMERIZATION; CONDUCTIVITY; COMPLEXES; MESOPHASE;

D O I：

10.1039/b912873e

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：

A series of new dicationic imidazolium-based organic salts bearing fluoro substituents on the bent-core unit and/or linker benzene-ring positions has been synthesized and characterized. The properties of these salts, including transition and decomposition temperatures, and density were determined, indicating that their performance is strongly dependent on the positions of the fluoro substituents, the number of carbon atoms in the alkyl group, and the anion present. Examination by polarized optical microscopy showed that the four salts (compounds 4c, 7a, 7b and 8b, where the alkyl group was C12H25-) were mesomorphic and these data were supported by DSC measurements.

引用

收藏

页码：8232 / 8238

页数：7

相关论文

共 54 条

[21]

2-K

[22] Columnar superstructures of non-disc-shaped molecules generated by arene-perfluoroarene face-to-face interactions [J].

Kishikawa, Keiki ;

Oda, Katsuyuki ;

Aikyo, Sumihiro ;

Kohmoto, Shigeo .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2007, 46 (05) :764-768

[23] Synthesis and mesomorphic properties of rigid-core ionic liquid crystals [J].

Kouwer, Paul H. J. ;

Swager, Timothy M. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2007, 129 (45) :14042-14052

[24]

Lagerwall ST., 1999, Ferroelectric and Antiferroelectric Liquid Crystals

[25] Self-assembling asymmetric bisphenazines with tunable electronic properties [J].

Lee, Dong-Chan ;

Jang, Kyoungmi ;

McGrath, Kelly K. ;

Uy, Rycel ;

Robins, Kathleen A. ;

Hatchett, David W. .

CHEMISTRY OF MATERIALS, 2008, 20 (11) :3688-3695

[26] Supramolecular liquid crystals of amide functionalized imidazolium salts [J].

Lee, KM ;

Lee, YT ;

Lin, IJB .

JOURNAL OF MATERIALS CHEMISTRY, 2003, 13 (05) :1079-1084

[27] Synthesis and properties of oxadiazole based V-shaped, shape persistent nematogens [J].

Lehmann, Matthias ;

Koehn, Christiane ;

Kresse, Horst ;

Vakhovskaya, Zinaida .

CHEMICAL COMMUNICATIONS, 2008, (15) :1768-1770

[28] Fluorine-containing ionic liquids from N-alkylpyrrolidine and N-methylpiperidine and fluorinated acetylacetones:: Low melting points and low viscosities [J].

Li, Xiaoju ;

Zeng, Zhuo ;

Garg, Sonali ;

Twamley, Brendan ;

Shreeve, Jean'ne M. .

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2008, (21) :3353-3358

[29] Formation of columnar and cubic mesophases by calamitic molecules:: Novel amphotropic biphenyl derivatives [J].

Lindner, N ;

Kölbel, M ;

Sauer, C ;

Diele, S ;

Jokiranta, J ;

Tschierske, C .

JOURNAL OF PHYSICAL CHEMISTRY B, 1998, 102 (27) :5261-5273

[30] Study on the thermotropic properties of highly fluorinated 1,2,4-oxadiazolylpyridinium salts and their perspective applications as ionic liquid crystals [J].

Lo Celso, Fabrizio ;

Pibiri, Ivana ;

Triolo, Alessandro ;

Triolo, Roberto ;

Pace, Andrea ;

Buscemi, Silvestre ;

Vivona, Nicolo .

JOURNAL OF MATERIALS CHEMISTRY, 2007, 17 (12) :1201-1208

← 1 2 3 4 5 6 →