COLUMNAR PHASES FROM SEMI-DISCOID MOLECULES - PHASE INDUCTION VIA HYDROGEN-BONDING AND CHARGE-TRANSFER INTERACTIONS

被引：36

作者：

PAULUS, W ^{[1
]}

RINGSDORF, H ^{[1
]}

DIELE, S ^{[1
]}

PELZL, G ^{[1
]}

机构：

[1] MARTIN LUTHER UNIV,WISSENSCH BEREICH PHYS CHEM,SEKT CHEM,O-4010 HALLE,GERMANY

来源：

LIQUID CRYSTALS | 1991年 / 9卷 / 06期

关键词：

D O I：

10.1080/02678299108055003

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

To investigate the non-linear optical properties of nitrophenylhydrazones, a series of 4-nitro- and 2,4-dinitrophenylhydrazones of substituted aromatic aldehydes were synthesized. It was found that many of the dinitrophenylhydrazone derivatives are liquid-crystalline and X-ray investigations show that the mesophase corresponds to a hexagonal columnar structure. To explain this unusual behaviour it is necessary to assume that a mesogenic structure is formed by intramolecular hydrogen bonding of the dinitrophenylhydrazones. Charge transfer induced antiparallel alignment of these moleculer dipoles leads to discoid structures, forming the columnar phases.

引用

页码：807 / 819

页数：13

共 12 条

[1]

BENGS H, 1990, ADV MATER, V2, P3

[2] X-RAY-DIFFRACTION AND POLYMORPHISM OF SMECTIC LIQUID-CRYSTALS .2. D AND E MODIFICATIONS [J].

DIELE, S ;

SACKMANN, H ;

BRAND, P .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1972, 17 (02) :163-&

[3] A FILLED SMECTIC-A PHASE - A NOVEL KIND OF INDUCED SMECTIC-A PHASE OBSERVED FOR BINARY-MIXTURES [J].

DIELE, S ;

PELZL, G ;

WEISSFLOG, W ;

DEMUS, D .

LIQUID CRYSTALS, 1988, 3 (08) :1047-1053

[4]

HARRIS FW, 1989, 292 POLYM PREPR, P308

[5] 2ND-HARMONIC GENERATION IN LANGMUIR-BLODGETT MONOLAYERS OF STILBAZIUM SALT AND PHENYLHYDRAZONE DYES [J].

LUPO, D ;

PRASS, W ;

SCHEUNEMANN, U ;

LASCHEWSKY, A ;

RINGSDORF, H ;

LEDOUX, I .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1988, 5 (02) :300-308

[6] HYDROGEN-BOND FORMATION IN NITROANILINES - THE 1ST STEP IN DESIGNING ACENTRIC MATERIALS [J].

PANUNTO, TW ;

URBANCZYKLIPKOWSKA, Z ;

JOHNSON, R ;

ETTER, MC .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1987, 109 (25) :7786-7797

[7]

PAULUS W, 1989, 18 FREIB ARB TAG FLU, P20

[8] POLYMERS CONTAINING HYDROGEN-BONDING RINGS - SYNTHESIS AND THERMAL-PROPERTIES OF POLY(ENAMINE-KETONES) [J].

PAVLISKO, JA ;

HUANG, SJ ;

BENICEWICZ, BC .

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1982, 20 (11) :3079-3094

[9] INDUCTION OF LIQUID-CRYSTALLINE PHASES - FORMATION OF DISCOTIC SYSTEMS BY DOPING AMORPHOUS POLYMERS WITH ELECTRON-ACCEPTORS [J].

RINGSDORF, H ;

WUSTEFELD, R ;

ZERTA, E ;

EBERT, M ;

WENDORFF, JH .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1989, 28 (07) :914-918

[10] Information on watery mix crstyalls. [J].

Walter, R .

BERICHTE DER DEUTSCHEN CHEMISCHEN GESELLSCHAFT, 1925, 58 :2303-2310

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