A greener electrochromic liquid crystal based on ionic liquid electrolytes
A greener electrochromic liquid crystal based on ionic liquid electrolytes
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基于离子液体电解质的绿色电致变色液晶
DOI：
10.1080/02678292.2016.1160296
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发表时间：
2016-05
期刊：
影响因子：
2.2
通讯作者：
Huai Yang
中科院分区：
文献类型：
--
作者：
Haiquan Zhang;Lanying Zhang;Dengke Yang;Huai Yang
摘要研制了一种由液晶和离子液体组成的电致变色液晶材料。含有取代二苯乙炔的LC用作电致变色（EC）材料以实现在直流（DC）电场下的透射率和颜色变化，而具有可设计的阳离子和阴离子的IL用作电解质。本文中，筛选了一系列IL电解质以研究IL如何调谐ECLC单元的电光性能。通过测试IL在EC电池中的电化学窗口，当EC材料经历氧化和还原时，具有[NTf 2]−阴离子的IL显示出足够的电化学稳定性。在电化学工作站的控制下，通过紫外-可见光谱法评价了含有1-乙氧基-4-[2-（4-戊基苯基）乙炔基]-苯（PEB）和IL的ECLC的电光性能。与其他PEB-IL相比，具有[Bmim][NTf 2]电解质的PEB-[Bmim][NTf 2]在低工作电压下显示出令人满意的透射率。此外，在[Bmim][NTf 2]中原位形成的Pd NP降低了EC电位并改善了ECLC电池的光散射。在这项工作中，我们还设计了一个双功能器件的基础上聚合物分散液晶（PDLC）主机电致变色客体分子，并分析了LC电解质混合物的电光和电致变色性能，以获得控制入射日光和眩光在建筑和汽车应用。图形摘要
ABSTRACT An electrochromic liquid crystal (ECLC) material composed of only liquid crystal (LC) and ionic liquid (IL) was developed. The LC containing the substituted diphenylacetylene serves as electrochromic (EC) material to realise transmittance and colour change under the direct current (DC) field, while the IL with the designable cation and anion served as electrolyte. Herein, a series of IL electrolytes was screened to investigate how IL tunes the electro-optic performance of the ECLC cell. By testing the electrochemistry window of ILs in EC cells, IL with the [NTf2]− anion shows adequate electrochemical stability when the EC material undergoes oxidation and reduction. The electro-optic performance of ECLC containing 1-ethoxy-4-[2-(4-pentylphenyl) ethynyl]-benzene (PEB) and IL was then evaluated by UV-vis spectrometry under the control of an electrochemical work station. Compared with other PEB-IL, PEB-[Bmim][NTf2] with [Bmim][NTf2] electrolyte shows a satisfactory transmittance at low operating voltage. Furthermore, Pd NPs in situ formed in [Bmim][NTf2] reduced the EC potential and improved the light scattering of the ECLC cell. In this work, we also designed a bifunctional device based on polymer dispersed liquid crystal (PDLC) that hosts electrochromic guest molecules, and analysed the electro-optical and electrochromic properties of LC electrolyte mixtures, in order to gain control of the incident daylight and glare in building and automotive applications. GRAPHICAL ABSTRACT
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影响因子：
5.4
作者：
Shuojin Wang;Shaojie Jiang;J. Nie
通讯作者：
Shuojin Wang;Shaojie Jiang;J. Nie
DOI：
10.1016/b978-0-444-89930-9.x5000-4
发表时间：
1995
期刊：
--
影响因子：
--
作者：
C. Granqvist
通讯作者：
C. Granqvist
影响因子：
3.2
作者：
NAKAMURA, K;NAKADA, K;KOISHI, E
通讯作者：
KOISHI, E
影响因子：
6.4
作者：
Ling Wang;Wanli He;Qian Wang;Meina Yu;Xia Xiao;Yang Zhang;M. Ellahi;Dongyu Zhao;Huai Yang;Lin Guo
通讯作者：
Ling Wang;Wanli He;Qian Wang;Meina Yu;Xia Xiao;Yang Zhang;M. Ellahi;Dongyu Zhao;Huai Yang;Lin Guo
影响因子：
6.9
作者：
A. Vuk;V. Jovanovski;A. Pollet-Villard;I. Jerman;B. Orel
通讯作者：
A. Vuk;V. Jovanovski;A. Pollet-Villard;I. Jerman;B. Orel