Hockey Stick Liquid Crystals Based on a 2,5-Asymmetric Disubstituted [1,3,4]Oxadiazole Core

被引：16

作者：

Cioanca, Elena-Raluca

Epure, Elena Luiza

Carlescu, Irina

Lisa, Gabriela

Wilson, Daniela ^{[2
]}

Hurduc, Nicolae

Scutaru, Dan ^{[1
]}

机构：

[1] Gheorghe Asachi Tech Univ Iasi, Fac Chem Engn & Environm Protect, Dept Nat & Synthet Polymers, Iasi 700050, Romania

[2] Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, Philadelphia, PA 19104 USA

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2011年 / 537卷

关键词：

asymmetric [1; 3; 4]oxadiazole; bent-core; hockey stick liquid crystals; PHASE; BEHAVIOR; FIELD;

D O I：

10.1080/15421406.2011.556444

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The article describes the liquid-crystalline properties of some 2,5-asymmetric disubstituted [1,3,4]oxadiazole derivatives containing an azo and an ester linkage obtained through esterification of 2-(4-methoxyphenyl)-5-(4-hydroxyphenyl)-[1,3,4]oxadiazole with a series of 4-(4-alkoxyphenyl)-benzoic acids containing 6-10 and 18 aliphatic carbon atoms. All reported compounds present liquid-crystalline properties, evidenced by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM), with nematic and smectic C type structures, with very large range of stability of mesophases (between 130 degrees C and 198 degrees C on heating and 134 degrees C and 214 degrees C on cooling).

引用

页码：51 / 63

页数：13

共 21 条

[1] Ferrocene-containing liquid crystals bearing a cholesteryl unit [J].

Apreutesei, Daniela ;

Mehl, Georg H. ;

Scutaru, Dan .

LIQUID CRYSTALS, 2007, 34 (07) :819-831

[2] Non-linear boomerang-shaped liquid crystals derived from 2,5-bis (p-hydroxyphenyl)-1,3,4-oxadiazole [J].

Dingemans, TJ ;

Samulski, ET .

LIQUID CRYSTALS, 2000, 27 (01) :131-136

[3] Javelin-, hockey stick-, and boomerang-shaped liquid crystals.: Structural variations on p-quinquephenyl [J].

Dingemans, TJ ;

Murthy, NS ;

Samulski, ET .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (37) :8845-8860

[4]

HURDUC N, MAT STUDIO 4 0

[5] MESOMORPHIC BEHAVIOR OF 1,2-PHENYLENE BIS[4-(4-ALKOXYBENZYLIDENEAMINO)BENZOATES] [J].

KUBOSHITA, M ;

MATSUNAGA, Y ;

MATSUZAKI, H .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1991, 199 :319-326

[6] THE EVEN-ODD EFFECT IN LIQUID-CRYSTALS - A COLLECTIVE OR INTRINSIC MOLECULAR PROPERTY [J].

LALANNE, JR ;

LEMAIRE, B ;

ROUCH, J ;

VAUCAMPS, C ;

PROUTIERE, A .

JOURNAL OF CHEMICAL PHYSICS, 1980, 73 (04) :1927-1931

[7] Spontaneous formation of macroscopic chiral domains in a fluid smectic phase of achiral molecules [J].

Link, DR ;

Natale, G ;

Shao, R ;

Maclennan, JE ;

Clark, NA ;

Korblova, E ;

Walba, DM .

SCIENCE, 1997, 278 (5345) :1924-1927

[8] Thermotropic biaxial nematic liquid crystals [J].

Madsen, LA ;

Dingemans, TJ ;

Nakata, M ;

Samulski, ET .

PHYSICAL REVIEW LETTERS, 2004, 92 (14) :145505-1

[9] MESOMORPHIC PROPERTIES OF 4-[3,4-BIS(4-ALKOXYBENZOYLOXY)BENZYLIDENEAMINO]AZOBENZENES AND RELATED-COMPOUNDS [J].

MASUDA, T ;

MATSUNAGA, Y .

BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1991, 64 (07) :2192-2195

[10] Distinct ferroelectric smectic liquid crystals consisting of banana shaped achiral molecules [J].

Niori, T ;

Sekine, T ;

Watanabe, J ;

Furukawa, T ;

Takezoe, H .

JOURNAL OF MATERIALS CHEMISTRY, 1996, 6 (07) :1231-1233

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