Regulating mesogenic properties of ionic liquid crystals by preparing binary or multi-component systems

	Regulating mesogenic properties of ionic liquid crystals by preparing binary or multi-component systems
	Wang, M; Pan, X; Xiao, SF; Zhang, CN; Li, WX; Dai, SY
	2012
发表期刊	JOURNAL OF MATERIALS CHEMISTRY
摘要	In this study, a series of binary systems based ionic liquid crystals (ILCs) C(12)MIm(BF4)(y)I-x (x + y = 1) are prepared by mixing ILCs 1-dodecyl-3-methylimidazolium iodide (C(12)MImI) and 1-dodecyl-3-methylimidazolium tetrafluoroborate (C(12)MImBF(4)), aiming to combine the properties of both C(12)MImBF(4) and C(12)MImI. Their mesogenic properties are characterized by thermal analysis, polarized optical microscopy, X-ray diffraction as well as anisotropic ionic conductivity measurements. It is found that the smectic A phase with interdigitated bilayer structure is observed in the C(12)MIm (BF4) yIx series. The binary system C(12)MIm(BF4) yIx has a larger mesophase temperature range and interdigitated layer spacing than pure C(12)MImBF(4). And the anisotropic ionic conductivity of the binary system, including parallel and perpendicular to smectic layer, is higher than pure C(12)MImI. Moreover, in binary system C(12)MIm(BF4) yIx, with the increasing content of C(12)MImI the ability of the anion to form three dimensional hydrogen bonds increases, resulting in the increase of the mesophase temperature range, interdigitated layer spacing and the decrease of anisotropic ionic conductivity. Furthermore, multi-component system based ILCs are obtained by introducing iodine to the binary system, and the mesophase temperature range is lowered, which is associated with the weak ability of I-3(-) to form hydrogen bond with cations. All these results suggest that we can regulate the mesogenic properties of ILCs as we need by making binary or even multi-component systems.
学科领域	等离子体物理与核聚变研究
WOS记录号	WOS:000298970700079
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/5793
专题	中科院等离子体物理研究所
推荐引用方式 GB/T 7714	Wang, M,Pan, X,Xiao, SF,et al. Regulating mesogenic properties of ionic liquid crystals by preparing binary or multi-component systems[J]. JOURNAL OF MATERIALS CHEMISTRY,2012.
APA	Wang, M,Pan, X,Xiao, SF,Zhang, CN,Li, WX,&Dai, SY.(2012).Regulating mesogenic properties of ionic liquid crystals by preparing binary or multi-component systems.JOURNAL OF MATERIALS CHEMISTRY.
MLA	Wang, M,et al."Regulating mesogenic properties of ionic liquid crystals by preparing binary or multi-component systems".JOURNAL OF MATERIALS CHEMISTRY (2012).

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