Synthesis and mesomorphic properties of fluoro and isothiocyanato biphenyl tolane liquid crystals

被引：14
作者：
Liao, Yung-Ming
Janarthanan, Narayanasamy
Hsu, Chain-Shu [1 ]
Gauza, Sebastian
Wu, Shin-Tson
机构：
[1] Natl Chiao Tung Univ, Dept Appl Chem, Hsinchu 30010, Taiwan
[2] Univ Cent Florida, Coll Opt & Photon, Orlando, FL 32816 USA
来源：
LIQUID CRYSTALS | 2006年 / 33卷 / 10期
关键词：
D O I：
10.1080/02678290601008497
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Four series of high birefringence biphenyl tolane liquid crystals having a terminal isothiocyanato or fluoro group were synthesized; their mesomorphic properties were studied by optical polarizing microscopy and DSC. These biphenyl tolane compounds exhibit reasonably low melting points and high birefringence of 0.37-0.49. By using these compounds a eutectic mixture was formulated exhibiting a wide nematic range, high figure-of-merit and low viscosity.
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页码：1199 / 1206
页数：8
相关论文
共 41 条
[1]   SYNTHESIS OF ISOCYANO AND (HALOALKYNYL) BIPHENYLS - NEW THERMOTROPIC LIQUID-CRYSTALS [J].
BAILEY, AL ;
BATES, GS .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1991, 198 :417-428
[2]   SOME PHYSICAL-PROPERTIES OF MESOGENIC "4-(TRANS-4'-NORMAL-ALKYLCYCLOHEXYL) ISOTHIOCYANATOBENZENES [J].
BARAN, JW ;
RASZEWSKI, Z ;
DABROWSKI, R ;
KEDZIERSKI, J ;
RUTKOWSKA, J .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1985, 123 (1-4) :237-245
[3]  
Bowley CC, 1999, MOL CRYST LIQ CRYS A, V331, P2069
[4]   High birefringence difluoroisothiocyanate biphenyl tolane liquid crystals [J].
Catanescu, O ;
Chien, LC .
LIQUID CRYSTALS, 2006, 33 (01) :115-120
[5]   Synthesis, transition temperatures, and optical properties of compounds with simple phenyl units linked by double bond, triple bond, ester or propiolate linkages [J].
Cross, GJ ;
Seed, AJ ;
Toyne, KJ ;
Goodby, JW ;
Hird, M ;
Artal, MC .
JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (07) :1555-1563
[6]   MESOMORPHIC CHARACTERISTICS OF SOME NEW HOMOLOGOUS SERIES WITH THE ISOTHIOCYANATO TERMINAL GROUP [J].
DABROWSKI, R ;
DZIADUSZEK, J ;
SZCZUCINSKI, T .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1985, 124 (1-4) :241-257
[7]   FIELD CONTROLLED LIGHT-SCATTERING FROM NEMATIC MICRODROPLETS [J].
DOANE, JW ;
VAZ, NA ;
WU, BG ;
ZUMER, S .
APPLIED PHYSICS LETTERS, 1986, 48 (04) :269-271
[8]   PALLADIUM-CATALYZED COUPLING OF ARYL TRIFLATES WITH ORGANOSTANNANES [J].
ECHAVARREN, AM ;
STILLE, JK .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (18) :5478-5486
[9]   New nematics with high birefringence [J].
Goto, Y ;
Inukai, T ;
Fujita, A ;
Demus, D .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1995, 260 :23-38
[10]   THE SYNTHESIS AND TRANSITION-TEMPERATURES OF SOME 4,4''-DIALKYL-1,1'-4',1''-TERPHENYL AND 4,4''-ALKOXYALKYL-1,1'-4',1''-TERPHENYL WITH 2,3-DIFLUORO OR 2',3'-DIFLUORO SUBSTITUENTS AND OF THEIR BIPHENYL ANALOGS [J].
GRAY, GW ;
HIRD, M ;
LACEY, D ;
TOYNE, KJ .
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2, 1989, (12) :2041-2053
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