New isothiocyanatotolane liquid crystals with terminal but-3-enyl substitute

	New isothiocyanatotolane liquid crystals with terminal but-3-enyl substitute
	Li, J. L.; J. Li; M. G. Hu; Z. W. An; Z. H. Peng; L. Zhang and N. Gan
	2017
发表期刊	Liquid Crystals
卷号	44 期号:5
摘要	Four kinds of new but-3-enyl-based isothiocyanate liquid crystals composed of tolane core and but-3-enyl terminal group (A1-A4) were synthesised via seven step reactions based on 2-(4bromophenethyl)- 1,3-dioxolane, and four n-butyl analogues B1-B4 as comparison structures were also prepared. The mesomorphic properties and physical properties of the compounds were investigated. Single fluorinated compounds A2 and A3 exhibit monotropic nematic phase, and they have lower melting enthalpy and higher clearing points than those of the comparison compounds B2 and B3. The non-fluoro-substituted compound A1 and difluorinated compound A4 exhibit no nematic phase. Replacement of n-butyl chain by but-3-enyl as terminal group is enabled to increase birefringence (Delta n similar to 0.394-0.430) and reduce rotational viscosity. These isothiocyanatotolanes with terminal but-3-enyl substitution have potential application for high birefringence mixtures.
收录类别	sci ; ei
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/59003
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Li, J. L.,J. Li,M. G. Hu,et al. New isothiocyanatotolane liquid crystals with terminal but-3-enyl substitute[J]. Liquid Crystals,2017,44(5).
APA	Li, J. L.,J. Li,M. G. Hu,Z. W. An,Z. H. Peng,&L. Zhang and N. Gan.(2017).New isothiocyanatotolane liquid crystals with terminal but-3-enyl substitute.Liquid Crystals,44(5).
MLA	Li, J. L.,et al."New isothiocyanatotolane liquid crystals with terminal but-3-enyl substitute".Liquid Crystals 44.5(2017).

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