Broadband complex permittivity measurements of nematic liquid crystals based on cavity perturbation method
作者：
Yu, Chengyong;Li, En;Zhang, Zhiyong;Wang, Xiangru;Gao, Chong;...
期刊：
Liquid Crystals ,2020年47(1):89-98 ISSN：0267-8292
通讯作者：
Guo, Gaofeng
作者机构：
[Yu, Chengyong; Li, En; Gao, Chong; Li, Yafeng; Guo, Gaofeng; Zheng, Hu] Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu, Sichuan, Peoples R China;[Zhang, Zhiyong] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan, Hubei, Peoples R China;[Wang, Xiangru] Univ Elect Sci & Technol China, Sch Optoelect Sci & Engn, Chengdu, Sichuan, Peoples R China
通讯机构：
[Guo, Gaofeng] U;Univ Elect Sci & Technol China, Sch Elect Sci & Engn, Chengdu, Sichuan, Peoples R China.
关键词：
Liquid crystals;anisotropy;complex permittivity;broadband;multi-mode;perturbation method
摘要：
Liquid crystals (LCs) have already been widely used in reconfigurable microwave devices as an excellent phase change material for their electric tunable dielectric properties. An accurate value of complex permittivity on a given LCs is the most important parameter on designing microwave devices. In this paper, a novel method is proposed to realise a broadband permittivity measurement. On the basis of the theory of perturbation, it consisted of a double-ridge waveguide cavity and the given vector network analyser. In order to have a broadband measuring range and uniformly distribute operating frequency points, multi-mode double-ridged waveguide cavity is introduced to resonate at 11 operating modes (TE1,0,2n-1,n = 1,2, ..., 11). Meanwhile, to suppress the undesired-modes effectively, several non-radiating slots are applied to keep the operating modes easily recognisable, so as to complete the broadband complex permittivity measurement in 5–40 GHz using only one cavity. Besides, another feature of this method is that the total-required sample is only about 0.02 mL because the sample loading area in the double-ridged waveguide cavity is perfectly designed very small. Therefore, several NLCs are measured, including a certain commercial mixture MM (Merck), and M1~ M7, as developed LC mixtures with large dielectric anisotropy and low microwave losses. © 2019, © 2019 Informa UK Limited, trading as Taylor & Francis Group.
语种：
英文
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Study on dielectrics and low-temperature viscosity performance of high-frequency difluorovinyl liquid crystals
作者：
Chen, Ting;Liu, Manman;Ouyang, Huiqi;Guan, Jintao;Zhang, Zhiyong* ;...
期刊：
Proceedings of SPIE - The International Society for Optical Engineering ,2019年10841 ISSN：0277-786X
通讯作者：
Zhang, Zhiyong
作者机构：
[Guan, Jintao; Chen, Ting; Liu, Manman; Zhang, Zhiyong; Ouyang, Huiqi] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Hubei, Peoples R China.;[Wang, Xiangru] Univ Elect Sci & Technol China, Inst Elect Sci & Technol, Chengdu, Sichuan, Peoples R China.
通讯机构：
[Zhang, Zhiyong] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Hubei, Peoples R China.
会议名称：
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Meta-Surface-Wave and Planar Optics
会议时间：
Chengdu, China
会议地点：
Chengdu, PEOPLES R CHINA
会议主办单位：
[Chen, Ting;Liu, Manman;Ouyang, Huiqi;Guan, Jintao;Zhang, Zhiyong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Hubei, Peoples R China.^[Wang, Xiangru] Univ Elect Sci & Technol China, Inst Elect Sci & Technol, Chengdu, Sichuan, Peoples R China.
会议论文集名称：
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Meta-Surface-Wave and Planar Optics
关键词：
high-frequency liquid crystal;high birefringence;difluorovinyl;dielectric loss;low temperature viscosity
摘要：
With the rapid development of switchable devices for the K-band (≤40GHz) frequency range, there is a strong demand for liquid crystals (LCs) exhibiting high birefringence, low melting point and low dielectric loss,low viscosity and good miscibility. The novel series of difluorovinyl liquid crystal compounds with δn value around 0.4, relatively low melting point which can be as low as 34.4 °C were designed and synthesized. Comparing the difluorovinyl liquid crystal compound with isothiocyanide-containing liquid crystals, UV absorption test and dielectric loss test analysis at high frequency were performed. Difluorovinyl liquid crystals were prepared into a mixed liquid crystal material for high-frequency dielectric loss test and viscosity performance test analysis at different temperatures to explore its low temperature viscosity dependenceon temperature. The experimental results show that the difluorovinyl liquid crystal compounds not only have higher δn value and lower melting point, but also have lower dielectric loss at high frequency and low temperature viscosity, which can improve the low temperature viscosity performance of liquid crystal materials.<br/> ©2019 SPIE.
语种：
英文
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Continuously adjustable period optical grating based on flexoelectric effect of a bent-core nematic liquid crystal in planar cells
作者：
Yuan, Rui;Ye, Wen-Jiang* ;Xing, Hong-Yu;Li, Zhen-Jie;Sun, Ting-Ting;...
期刊：
Optics Express ,2018年26(4):4288-4299 ISSN：1094-4087
通讯作者：
Ye, Wen-Jiang
作者机构：
[Sun, Yu-Bao; Xing, Hong-Yu; Sun, Ting-Ting; Zhu, Ji-Liang; Li, Zhen-Jie; Yuan, Rui; Ye, Wen-Jiang] Hebei Univ Technol, Sch Sci, Tianjin 300401, Peoples R China.;[Xiang, Ying] Guangdong Univ Technol, Sch Informat Engn, Guangzhou 510006, Guangdong, Peoples R China.;[Zhang, Zhi-Yong] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.;[Cai, Ming-Lei] Hebei Jiya Elect Co Ltd, Shijiazhuang 050071, Hebei, Peoples R China.;[Cai, Ming-Lei] Hebei Prov Res Ctr LCD Engn Technol, Shijiazhuang 050071, Hebei, Peoples R China.
通讯机构：
[Ye, Wen-Jiang] H;Hebei Univ Technol, Sch Sci, Tianjin 300401, Peoples R China.
关键词：
Cells;Cytology;Diffraction gratings;Liquid crystals;Applied voltages;Bent cores;Flexoelectric effects;Light diffraction;Linear relationships;Planar cells;Polarizing microscopy;Pre-tilt angle;Nematic liquid crystals;chemical model;chemistry;computer simulation;electromagnetism;liquid crystal;materials testing;molecular model;optics;procedures;refractometry;Young modulus;Computer Simulation;Elastic Modulus;Electromagnetic Fields;Liquid Crystals;Materials Testing;Models, Chemical;Models, Molecular;Optics and Photonics;Refractometry
摘要：
The structures of flexodomains, which are similar to optical gratings and can be controlled by the amplitude of applied voltage and temperature, were verified through polarizing microscopy and light diffraction techniques. The properties of the optical grating induced by a bent-core nematic liquid crystal in planar cells with varied cell gaps and pretilt angles were studied. The period of optical grating decreases with the increase in the amplitude of the applied voltage and pretilt angle. In addition, the period increases with the increase in cell gap and temperature. The period of optical grating has a linear relationship with temperature. The continuously adjustable period has the potential to become an important and extended application of optical grating. © 2018 Optical Society of America.
语种：
英文
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异硫氰基嘧啶乙炔类液晶合成及性能研究
作者：
王震 WANG Zhen;李潭 LI Tan;闻炎豪 WEN Yan-hao;张智勇 ZHANG Zhi-yong;关金涛 GUAN jin-tao;...
期刊：
液晶与显示 ,2018年33(9):750-757 ISSN：1007-2780
通讯作者：
Zhang, Z.-Y.
作者机构：
[闻炎豪 WEN Yan-hao; 戴志群 DAI Zhi-qun; 王震 WANG Zhen; 李潭 LI Tan; 张智勇 ZHANG Zhi-yong; 关金涛 GUAN jin-tao] Department of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;[彭增辉 PENG Zeng-hui] State Key Laboratory of Applied Otticr, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China
通讯机构：
[Zhang, Z.-Y.] D;Department of Chemistry and Environmental Engineering, China
关键词：
嘧啶乙炔;高介电各向异性;近晶相态液晶;高光学各向异性;合成
摘要：
中心环外侧嘧啶环作为液晶分子的极性介晶基团，能有效增大分子的偶极矩和分子间的作用力，提高分子的介电各向异性，降低液晶的驱动电压，也有利于形成近晶相液晶态。本文试图以嘧啶乙炔为中心结构单元，以异硫氰基为端基，设计合成了嘧啶乙炔类异硫氰基液晶化合物（nBTM-NCS）系列共5个化合物；它们都经过IR、1H-NMR、13C-NMR和MS光谱对其分子结构鉴定，经过差热分析仪 (DSC)和偏光显微镜(POM)对其液晶性能进行检测。实验结果表明，所有化合物的分子结构均正确，具有近晶相态，其熔点较高并呈现奇偶效应；其光学各向异性达到0.45左右，介电常数21~24左右，可作为铁电液晶和聚合物分散液晶材料配方组分。 The pyrimidine ring outside of the rigid core ring of liquid crystal molecules used as a polar mesogenic group, can effectively increase the molecular dipole moment and intermolecular force, improve the dielectric anis-otropy of the compounds, reduce the driving voltage of the liquid crystal, and also favor to form some smec-tic phases. In this paper, where pyrimidine acetyleneisused as the central structural unit and isothiocyanide asthe end group, we could see that a series of liquid crystal compounds (nBTM-NCS) about five compounds were designed and synthesized. The molecular structure of all compounds were identified by IR, 1H-NMR, 13C-NMR and MS spectra, and their liquid crystal properties were measured by differential thermal analyzer (DSC) and polarizing microscope (POM).The experimental results show that all the compounds have the correct molecular structure and smectic phases. The melting point of the compounds is high and it shows a parity effect. Its optical anisotropy reaches about 0.45, and the dielectric constant is about 22 to 24. It can be used as the components for ferroelectric liquid crystals and polymer-dispersed liquid crystal materials.
语种：
中文
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2-烷基-5-(4-烷氧基)苯基含氮杂环液晶合成与性能研究
作者：
闻炎豪 WEN Yan-hao;李潭 LI Tan;王震 WANG Zhen;张智勇 ZHANG Zhi-yong;关金涛 GUAN Jin-tao;...
期刊：
液晶与显示 ,2018年33(9):725-733 ISSN：1007-2780
通讯作者：
Zhang, Z.-Y.
作者机构：
[戴志群 DAI Zhi-qun; 闻炎豪 WEN Yan-hao; 关金涛 GUAN Jin-tao; 王震 WANG Zhen; 李潭 LI Tan; 张智勇 ZHANG Zhi-yong] Department of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
通讯机构：
[Zhang, Z.-Y.] D;Department of Chemistry and Environmental Engineering, China
关键词：
嘧啶环;吡啶环;近晶相态;液晶化合物;合成
摘要：
含氮芳环作为液晶分子的极性介晶基团,能有效增大分子的偶极矩和分子间的作用力,有利于形成近晶相液晶态,提高分子的介电各向异性,降低液晶的驱动电压。本文试图以嘧啶、吡啶为中心结构单元来增大化合物的偶极矩,设计合成了二个系列含嘧啶、吡啶的双芳环液晶化合物nOBMm、nOBPm系列共7个化合物;它们都经过IR、1 H-NMR、13 CNMR和MS光谱对其分子结构鉴定,经过差热分析仪（DSC）和偏光显微镜（POM）对其液晶性能进行检测。实验结果表明,所有化合物的分子结构均正确,具有较宽的近晶相态,可作为铁电液晶和高分子聚合物分散液晶材料配方组分,为进一步研究低能耗铁电液晶和聚合物分散液晶材料提供了实验素材。
语种：
中文
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Alkylimidazole‐Based Phosphines as Efficient Ligands for Palladium‐Catalyzed Suzuki Reactions
作者：
Chen, Ting;Guan, Jin Tao* ;Zhang, Zhi Yong;Chen, Jing Jing;Liu, Fengyan;...
期刊：
Journal of Heterocyclic Chemistry ,2018年55(2):551-555 ISSN：0022-152X
通讯作者：
Guan, Jin Tao
作者机构：
[Zhang, Zhi Yong; Liu, Fengyan; Chen, Ting; Liu, Xiaopei; Chen, Jing Jing; Guan, Jin Tao] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Guan, Jin Tao] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
2 (diphenylphosphino) n iso propylimidazole;2 (diphenylphosphino) n tert butylimidazole;alkylimidazole;bis(n iso propyl 2 imidazolyl)phenylphosphine;bis(n tert butyl 2 imidazolyl)phenylphosphine;chlorodiphenylphosphine;imidazole;palladium;phosphine;tris(n iso propyl 2 imidazolyl)phosphine;tris(n tert butyl 2 imidazolyl)phosphine;unclassified drug;Article;carbon nuclear magnetic resonance;chemical analysis;chemical structure;infrared spectroscopy;phosphorus nuclear magnetic resonance;proton nuclear magnetic resonance;proton transport;Suzuki reaction;synthesis
摘要：
Two series of alkylimidazole-based phosphines were conveniently synthesized in one step from the corresponding alkylimidazole by selective deprotonation and quenching with chlorodiphenylphosphine. The novel ligands are easily tunable and exhibit good-to-excellent performance in the palladium-catalyzed Suzuki coupling reaction. © 2017 Wiley Periodicals, Inc.
语种：
英文
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含氮杂环类丙烯酸酯的合成和性能研究
作者：
李潭;闻炎豪;申烦;张智勇;关金涛
期刊：
化学世界 ,2018年59(3):140-147 ISSN：0367-6358
作者机构：
[李潭; 闻炎豪; 申烦; 张智勇; 关金涛] 武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023
关键词：
高折射率;低色散;五元含氮杂环;合成
摘要：
高折射率丙烯酸酯光学树脂在光学膜、液晶显示器以及LED增亮膜等领域应用广泛。为了合成具有高折射率、低色散的光学树脂单体,引入摩尔折射率较大的硫原子和苯环基团,以五元芳香杂环为中心结构、乙氧基为柔性链,丙烯酸酯为末端基团,合成出5个噻二唑和二唑的化合物。经过IR、 ~1H NMR、~(13)C NMR和MS进行表征,通过阿贝折射仪测量目标化合物的折射率和阿贝数。化合物的折射率均超过1.61,最高达到1.64,且阿贝值均在35以上。
语种：
中文
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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
作者：
Yin Junxia;Wen Yanhao;Mao Zhipeng;Zhang Zhiyong* ;Guan Jintao;...
期刊：
有机化学 ,2018年38(2):471-477 ISSN：0253-2786
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.
关键词：
噻二唑;二氟亚甲氧基;弯曲形液晶;向列相;合成
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.为进一步设计合成新型宽温向列相弯曲型液晶提供了素材和理论依据.
语种：
中文
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低熔点高Δn值双环向列相液晶的合成研究
作者：
王国华;王震;李潭;张智勇;戴志群;...
期刊：
液晶与显示 ,2017年32(11):861-867 ISSN：1007-2780
通讯作者：
Zhang, Z.-Y.
作者机构：
[李潭; 王震; 关金涛; 王国华; 戴志群; 张智勇] Department of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
通讯机构：
[Zhang, Z.-Y.] D;Department of Chemistry and Environmental Engineering, China
关键词：
低熔点;高双折射率;异硫氰基;合成
摘要：
为了获得低熔点、折射率各向异性（Δn）大的快速响应向列相液晶材料,高Δn值的液晶混合体系中需要加入熔点在50℃以下、Δn大于0.35的双环类液晶组分,以使快速响应向列相液晶材料满足室温工作的要求。本文合成了异硫氰基含氟二苯乙炔类液晶化合物;一方面由于在分子苯环侧位引入F原子,减小分子间作用力,使化合物的熔点下降;另一方面在两个苯环间引入三键、分子末端接入异硫氰基极性基团,增加了分子的共轭性,提高了目标化合物的Δn值。获得了熔点分别为31℃和50℃、Δn为0.39和0.40,这两种低熔点化合物与目前已具有的毫秒级快速响应向列相液晶化合物混合,可使其熔点低至10℃以下。
语种：
中文
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N-甲基咪唑膦/钯催化Sonogashira偶联反应研究
作者：
汪方瑰;黄凯智;关金涛;张智勇;陈晶晶
期刊：
广州化工 ,2017年45(14):58-60 ISSN：1001-9677
作者机构：
武汉轻工大学化学与环境工程学院,湖北 武汉,430023;[张智勇; 关金涛; 黄凯智; 汪方瑰; 陈晶晶] 武汉轻工大学
关键词：
Sonogashira偶联反应;N-甲基咪唑膦配体;催化
摘要：
系统考察了三种N-甲基咪唑膦配体在钯催化的Sonogashira反应中的催化活性。结果表明,这三种咪唑膦配体配体与氯化钯形成的络合物均能有效地催化溴苯与苯乙炔的Sonogashira偶联反应,催化活性随着咪唑环的个数增多呈现下降的趋势,其中单咪唑化合物L1催化活性最高。通过优化反应条件,在100℃条件下,以乙醇为溶剂,六氢吡啶为碱,单咪唑膦化合物L1/氯化钯体系能够有效催化不同溴代芳烃与苯乙炔的Sonogashira偶联反应。
语种：
中文
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二苯乙炔类液晶化合物的“二步法” 合成研究
作者：
鄢道仁;闻炎豪;王震;张智勇;关金涛;...
期刊：
现代化工 ,2017年37(7):74-77 ISSN：0253-4320
通讯作者：
Zhang, Z.-Y.
作者机构：
[鄢道仁; 闻炎豪; 王震; 张智勇; 关金涛; 戴志群] 武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430040
通讯机构：
Department of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
关键词：
二苯乙炔;“二步法” 合成;Sonogashira偶联;取代溴苯
摘要：
二苯乙炔类化合物是高折射率向列相液晶材料的重要成份,其主要合成方法Sonogashira偶联反应存在着合成路线较长、 产率偏低等缺点,不利于工业化生产。基于Sonogashira偶联反应机理,简化二苯乙炔类液晶化合物的合成步骤,以期缩短合成路线,提高全合成产率。实验结果表明,当以取代溴苯为原料,将二苯乙炔类化合物的合成步骤简化成“二步” 时,其全合成产率高达73.72%,比“一步法” 提高40%左右,比“三步法” 和“多步法” 提高15%左右; 缩短了合成路线,提高了合成效率; 探索出最佳反应条件: 以高沸点非质子氢试剂(如甲苯)为溶剂,KOH为碱性物质,DMAP为胺类物质,110℃ 下反应12 h。
语种：
中文
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电子级三酚A的合成工艺研究
作者：
王坤;申烦;张智勇;关金涛;尹俊霞
期刊：
武汉轻工大学学报 ,2016年35(2):40-44 ISSN：2095-7386
作者机构：
武汉轻工大学化学与环境工程学院,湖北武汉,430023;[关金涛; 张智勇; 申烦; 尹俊霞; 王坤] 武汉轻工大学
关键词：
三酚A;合成;工艺研究;电子级
摘要：
探究了A,A,A-三（4-羟苯基）-1-乙基-4-异丙苯（三酚A）新的合成方法和合成工艺。以α-甲基苯乙烯为原料,经过烷基化、酰基化、酯化、缩合、水解的过程合成出三酚A;并且着重探索了关键步骤以硫酸为催化剂合成三酚A的反应温度、反应时间、酚酮物质的量比、催化剂及助催化剂的用量的反应工艺条件;并且探索了三酚A的精制工艺条件,得到了纯度达到99.872%的电子级三酚A;此方法原料易得,产品纯度高,在工业上容易实施且效率较高。
语种：
中文
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高折射率含硫树脂光学材料研究进展
作者：
申烦;王坤;鄢道仁;张智勇;关金涛;...
期刊：
化学世界 ,2016年57(7):457-464 ISSN：0367-6358
作者机构：
[申烦; 王坤; 鄢道仁; 张智勇; 关金涛; 张开诚; 戴志群] 武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023
关键词：
硫原子;有机树脂;高折射率;色散
摘要：
有机树脂作为光学材料的重要部分,越来越受到人们的关注。折射率是有机树脂最重要的光学性能指标之一,硫原子既具有较高的摩尔折射度又具有较低的分子色散作用,将硫原子引入分子中是提高光学树脂折射率的最有效方法之一。通过对近几年报道的含硫杂环、含硫砜基、含硫环氧、环硫、含硫丙烯酸酯以及含硫聚氨酯等六种含硫光学树脂的折射率性能研究情况进行分析,简要综述国内外含硫高折射率树脂的研究进展情况。
语种：
中文
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Electrooptical properties of new type fluorinated phenyl-tolane isothiocyanate liquid crystal compounds
作者：
Peng, Zenghui;Wang, Qidong;Liu, Yonggang;Mu, Quanquan;Cao, Zhaoliang;...
期刊：
Liquid Crystals ,2016年43(2):276-284 ISSN：0267-8292
通讯作者：
Xuan, Li
作者机构：
[Xuan, Li; Zhang, Peiguang; Yang, Chengliang; Yao, Lishuang; Wang, Qidong; Cao, Zhaoliang; Xu, Huanyu; Liu, Yonggang; Peng, Zenghui; Mu, Quanquan] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun, Peoples R China.;[Zhang, Zhiyong] Wuhan Polytech Univ, Dep Chem & Environm Engn, Wuhan, Peoples R China.
通讯机构：
[Xuan, Li] C;Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, State Key Lab Appl Opt, Changchun, Peoples R China.
关键词：
Phenyl-tolane;electrooptical property;high birefringence;isothiocyanate liquid crystals
摘要：
A series of 4ʹ-(4-alkyl-phenyl)-2ʹ,6ʹ-difluorotolane isothiocyanate liquid crystal (LC) compounds were synthesised, and their phase transitions and electrooptical properties were investigated. These compounds exhibit high birefringence, about 0.47–0.52. As the number of carbon atoms in the alkyl chains increases, these LC compounds can exhibit smectic phases. When these LCs were mixed into the commercial LCs, the birefringence values of LC mixtures become higher than pure commercial LCs, and the visco-elastic coefficients of five LC mixtures are very close to each other at every test temperature. The results of response properties indicate that the compounds with a tri-fluorine substitution and n-propyl end group possess better response performance than the others. These LC compounds are particularly attractive for achieving fast response times in LC optic devices. © 2015 Taylor & Francis.
语种：
英文
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meso-酯类卟啉化合物的合成及光电性能研究
作者：
王坤;林君;申烦;张智勇;关金涛;...
期刊：
功能材料 ,2016年47(B06):153-158 ISSN：1001-9731
通讯作者：
Zhang, Z.
作者机构：
[王坤; 关金涛; 张智勇; 林君; 张开诚; 申烦; 戴志群] Department of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
通讯机构：
[Zhang, Z.] D;Department of Chemistry and Environmental Engineering, China
关键词：
卟啉合成;荧光量子效率;能隙;光致电材料
摘要：
采用Adler-Longo法,设计合成了两种系列共8种具有对称结构的中位四取代酯类卟啉化合物,通过~1H NMR,~（13）C NMR,IR对其分子结构进行了表征,通过紫外-可见光谱法（UV）、荧光光谱法（PL）和循环伏安法（CV）对这些化合物的光电性能进行了研究;结果表明,所合成的中位四取代酯类卟啉化合物结构正确,并均具有较高的荧光量子效率、较低的轨道能隙,是一类较好的光致电材料,在有机半导体材料、有机太阳能电池等方面具有潜在的应用前景。
语种：
中文
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不对称弯曲形液晶的合成与性能研究
作者：
毛志鹏;游红军;张智勇;王坤;申烦
期刊：
武汉轻工大学学报 ,2015年(3):41-45 ISSN：2095-7386
作者机构：
武汉轻工大学化学与环境工程学院,湖北武汉,430023;[张智勇; 申烦; 毛志鹏; 游红军; 王坤] 武汉轻工大学
关键词：
噁二唑;不对称弯曲形液晶;向列相;合成
摘要：
以2，5-二取代-1，3，4-噁二唑为中心核，酯基（-COO-）为桥键，直链烷基为末端基团，在单侧苯环侧位上引入氟原子，设计合成了3个新型不对称弯曲形液晶化合物8，9a和9b；并通过IR，1 H NMR，13 C NMR，19 F NMR和MS对其结构进行鉴定，经差热扫描仪（ DSC）和偏光显微镜（ POM）测定其液晶相态。结果表明：所有目标化合物的分子结构正确，都呈现向列相态，向列相态温度范围最宽达78℃；侧位单氟苯环结构化合物（8）的向列相温度范围没有二氟苯环结构（9）的宽。
语种：
中文
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Synthesis and Property of Unsymmetric Bent-core Liquid Crystals Based on 2,5-Disubstitueted-1,3,4-oxadiazole
作者：
Mao Zhipeng;You Hongjun;Wang Kun;Zhang Zhiyong* ;Guan Jintao;...
期刊：
有机化学 ,2015年35(12):2575-2582 ISSN：0253-2786
通讯作者：
Zhang Zhiyong
作者机构：
[Mao Zhipeng; Dai Zhiqun; Wang Kun; You Hongjun; Zhang Zhiyong; Guan Jintao] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.;[Xiang Ying] Guangdong Polytech Univ, Dept Technol, Inst & Informat Engn, Guangzhou 510006, Guangdong, Peoples R China.
通讯机构：
[Zhang Zhiyong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
噁二唑;不对称弯曲形液晶;向列相;合成
摘要：
以2，5-二取代-1，3，4-噁二唑为中心核，酯基（COO）为桥键，烷基（n=5～9）为末端基团，在单侧苯环侧位上引入氟原子，设计合成了两个系列新型不对称弯曲形液晶化合物9a-9e和10a-10e；并通过IR，^1HNMR，^13CNMR，^19FNMR和MS对其结构进行鉴定，经差热扫描仪（DSC）和偏光显微镜（POM）测定其液晶相态．结果表明：所有目标化合物的分子结构正确，都呈现向列相态，向列相态温度范围最宽达78℃；侧位单氟苯环结构化合物9a-9e的向列相态温度范围没有二氟苯环结构10a-10e的宽，并且化合物9a-9e都呈现奇偶效应．
语种：
中文
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Catalytic activity of 1-methylimidazole-based phosphine ligands in the palladium-catalyzed Suzuki coupling reaction
作者：
Guan, Jin Tao* ;Song, Xiao Ming;Zhang, Zhi Yong;Wei, Ben Mei;Dai, Zhi Qun
期刊：
Applied Organometallic Chemistry ,2015年29(2):87-89 ISSN：0268-2605
通讯作者：
Guan, Jin Tao
作者机构：
[Zhang, Zhi Yong; Dai, Zhi Qun; Wei, Ben Mei; Guan, Jin Tao; Song, Xiao Ming] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Peoples R China.
通讯机构：
[Guan, Jin Tao] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan, Peoples R China.
关键词：
1-methylimidazole;phosphine ligand;Suzuki coupling reaction
摘要：
The catalytic activities of three N-methylimidazole-based phosphine ligands in the Suzuki coupling reaction were tested using PdCl2 as the catalyst. The results showed all three phosphine ligands exhibited excellent activity towards the Suzuki reaction, and the catalytic activity decreased with increasing number of imidazole groups. Copyright (C) 2014 John Wiley & Sons, Ltd.
语种：
英文
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侧位甲基含氟三苯二炔类液晶化合物合成及其性质研究
作者：
章思汗;刘胜;刘可庆;张智勇;张开诚;...
期刊：
武汉轻工大学学报 ,2015年(3):46-51 ISSN：2095-7386
作者机构：
武汉轻工大学化学与环境工程学院,湖北武汉,430023;[张智勇; 刘胜; 未本美; 张开诚; 刘可庆; 章思汗] 武汉轻工大学
关键词：
液晶化合物;低熔点;宽相态;高双折射率
摘要：
三苯二炔类液晶化合物因具有双折射率（△n）高、向列相温度范围宽等特性而受到研究人员的重视。研究采用Sonogashira 偶联法合成了4种苯基含氟和甲基的三苯二炔类液晶化合物（Ⅵ），合成总产率达到20％，IR和NMR测试结果表明这些化合物的结构正确。对目标化合物的物化性质进行测试，结果表明，这些化合物具有较高的△n（＞0．42）和相对较低的熔点（72—83℃）以及较宽的向列相温度范围（60—100℃）。将这些化合物应用于液晶器件中，对于提高器件的响应性能具有积极意义。
语种：
中文
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An efficient and recyclable catalytic system: PdCl2-Dppc+-PF6--[bmim][PF6] for Heck coupling reaction
作者：
Liang Liu;Xiao Ming Song;Jin Tao Guan;Zhi Yong Zhang;Ben Mei Wei
期刊：
Asian Journal of Chemistry ,2015年27(6):2093-2095 ISSN：0970-7077
通讯作者：
Guan, J.T.
作者机构：
[Liu L.] School of Biology and Pharmaceutical Engineering, Wuhan Polytechnic University, Wuhan, China;[Wei B.M.; Guan J.T.; Zhang Z.Y.; Song X.M.] School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, China
通讯机构：
[Guan, J.T.] S;School of Chemical and Environmental Engineering, China
关键词：
Dppc+-PF6-;Heck coupling reaction;Recyclable
摘要：
An efficient PdCl2-Dppc+-PF6--[bmim][PF6] catalytic system has been developed for the Heck coupling reaction of various aryl iodides with olefins. The catalytic system allows the coupling reaction to proceed smoothly in excellent yields and can be recycled 5 times with minimal loss of activity.
语种：
英文
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