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二氟亚甲氧基噻二唑类弯曲形液晶合成与性能研究

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成果类型:
期刊论文
论文标题(英文):
Synthesis and Properties of Thiadiazole Bent-Core Liquid Crystal with Difluorooxymethylene-Bridge
作者:
Yin Junxia;Wen Yanhao;Mao Zhipeng;Zhang Zhiyong*;Guan Jintao;...
通讯作者:
Zhang Zhiyong
作者机构:
[Mao Zhipeng; Yan Daoren; Yin Junxia; Wen Yanhao; Zhang Zhiyong; Guan Jintao] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构:
[Zhang Zhiyong] W
Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
语种:
中文
关键词:
噻二唑;二氟亚甲氧基;弯曲形液晶;向列相;合成
关键词(英文):
Bent-core liquid crystal;Difluorooxymethylene;Nematic phase;Synthesis;Thiadiazole
期刊:
有机化学
ISSN:
0253-2786
年:
2018
卷:
38
期:
2
页码:
471-477
基金类别:
* Corresponding author. E-mail: zzy6211@126.com Received April 11, 2017; revised July 6, 2017; published online October 11, 2017. Project supported by the National Nutural Science Foundation of China (Nos. 11074054, 11374067). 国家自然科学基金(Nos. 11074054, 11374067)资助项目.
机构署名:
本校为第一且通讯机构
院系归属:
化学与环境工程学院
摘要:
弯曲形液晶以其独特的光电性能倍受关注.但目前所报道的弯曲形液晶化合物因其向列相温度范围较窄,相转化温度高,不利于基础与应用研究,发展缓慢.以2,5-二取代-1,3,4-噻二唑为弯曲中心,二氟亚甲氧基(CF_2O)为桥键,直链烷基(n=5~10, 12)为末端链基,设计合成了一系列新型弯曲形液晶化合物.所有目标化合物通过IR、~1H NMR、~(13)C NMR、~9F NMR进行结构表征,并通过差热扫描仪(DSC)和偏光显微镜(POM)对液晶相态进行测定.实验结果表明:所有目标化合物分子,都能呈现较宽的向列相态,最宽达92.74 ℃(化合物6a);较之结构相当的噁二唑类弯曲液晶化合物,其熔点稍高,液晶相态的温度范围更宽.为进一步设计合成...
摘要(英文):
Bent-core liquid crystal has attracted much attention because of its unique photoelectric performance. However, the bent-Core liquid crystal has been developed slowly because of its narrow temperature range and high phase transformation temperature. In this paper, a series of novel bent-core liquid crystal compounds were designed and synthesized, which were based on 2, 5-disubstitueted-1, 3, 4-thiadiazole as the central units, difluorooxymethylene (CF2O) as the linking group and straight alkyl as the terminal chain. The chemical structures of t...

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