本文合成了4个异硫氰基联苯乙炔类液晶化合物。通过1 HNMR、13 CNMR、19 FNMR、IR 和 MS 谱图鉴定结构正确。用差示扫描热议(DSC)和偏光显微镜(POM)对化合物的相变温度进行了测试,发现所合成目标化合物均呈现向列相,其相变态温度范围在105~137℃,其双折射率高于0.47,可作为液晶光栅高双折射率液晶材料的有效组分。
This paper has synthesized four isothiocyanato-diphenyl acetylene liquid crystal com-pounds.Their structures were identified by IR,1 HNMR,1 3 CNMR,1 9 FNMR,MS spectra.Their phase transition temperatures were tested by using differential scanning calorimetric(DSC)and polarizing optical microscopy(POM).It is found that all of the new compounds show nematic phase,and their phase transformation temperature was in the range of 105 ℃ to 137 ℃.Their birefringence are more than 0.47,which can be used as the effective components of high birefringence liquid crystal materials of liquid crystal raster.
参考文献
| [1] | Honma M;Nose T.Liquid-crystal blazed grating with azimuthally distributed liquid-crystal directors[J].Applied optics,200427(27):5193-5197. |
| [2] | 姜文汉.自适应光学技术[J].自然杂志,2006(01):7-13. |
| [3] | 黄翀;王建国;欧阳艳东;刘骥.温度对液晶光阀电光特性的影响[J].光学与光电技术,2008(6):33-35. |
| [4] | Qiong Song;Sebastian Gauza;Haiqing Xianyu;Shin Tson Wu;Yung-Ming Liao;Chin-Yen Chang;Chain-Shu Hsu.High birefringence lateral difluoro phenyl tolane liquid crystals[J].Liquid Crystals: An International Journal in the Field of Anisotropic Fluids,20102(2):139-147. |
| [5] | Michael Hird;Kenneth J.Toyne;John W.Goodby;George W.Gray;Victoria Minter;Rachel P.Tuffin;Damien G.McDonnell.Synthesis,mesomorphic behaviour and optical anisotropy of some novel materials for nematic mixtures of high birefringence[J].Journal of Materials Chemistry: An Interdisciplinary Journal dealing with Synthesis, Structures, Properties and Applications of Materials, Particulary Those Associated with Advanced Technology,200411(11):1731-1743. |
| [6] | Carmen Otilia Catanescu;Shin-Tson Wu;Liang-Chy Chien.Tailoring the physical properties of some high birefringence isothiocyanato-based liquid crystals[J].Liquid Crystals: An International Journal in the Field of Anisotropic Fluids,20044(4):541-555. |
| [7] | Yung-Ming Liao;Narayanasamy Janarthanan;Chain-Shu Hsu;Sebastian Gauza;Shin-Tson Wu.Synthesis and mesomorphic properties of fluoro and isothiocyanato biphenyl tolane liquid crystals[J].Liquid Crystals: An International Journal in the Field of Anisotropic Fluids,200610(10):1199-1206. |
| [8] | Guan, XL;Zhang, LY;Zhang, ZL;Shen, ZH;Chen, XF;Fan, XH;Zhou, QF.Synthesis and properties of novel liquid crystalline materials with super high birefringence: styrene monomers bearing diacetylenes, naphthyl, and nitrogen-containing groups[J].Tetrahedron,200918(18):3728-3732. |
| [9] | 张智勇;刘可庆;戴志群;刘胜;林君.高双折射液晶化合物的研究进展[J].液晶与显示,2014(6):873-880. |
| [10] | Pinaki S. Bhadury;Meehir Palit;Mamta Sharma;Syed K. Raza;Devendra K. Jaiswal.Fluorinated phosphonium ylides: versatile in situ Wittig intermediates in the synthesis of hydrofluorocarbons[J].Journal of Fluorine Chemistry,20021(1):75-80. |
| [11] | Zhong Hui Li;Man Shing Wong.Synthesis and Functional Properties of End-Dendronized Oligo(9,9-diphenyl)fluorenes[J].Organic letters,20067(7):1499-1502. |
| [12] | 孙亮;张智勇;游红军;戴志群;未本美;宣丽;彭增辉.含氟联苯乙炔液晶化合物的合成及其低温性能[J].液晶与显示,2010(6):784-791. |
| [13] | Catanescu O;Chien LC.High birefringence difluoroisothiocyanate biphenyl tolane liquid crystals[J].Liquid Crystals: An International Journal in the Field of Anisotropic Fluids,20061(1):115-120. |
| [14] | Sonogashira K..Development of Pd-Cu catalyzed cross-coupling of terminal acetylenes with sp(2)-carbon halides[J].Journal of Organometallic Chemistry,20021/2(1/2):46-49. |
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