MOLECULAR-CONFORMATION AND ORIENTATION IN SOME SMECTIC C-PHASES

被引：11
作者：
BRYAN, RF
LEADBETTER, AJ
MEHTA, AI
TUCKER, PA
机构：
[1] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND
[2] UNIV EXETER,DEPT CHEM,EXETER EX4 4QD,DEVON,ENGLAND
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1984年 / 104卷 / 3-4期
关键词：
D O I：
10.1080/00268948408070428
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
X-ray diffraction measurements are reported on two types of smectic C phases. First, a compound showing very small variation in layer spacing through the smectic A and C phases was studied showing consistency with the normal second order behavior. Second, a homologous series of 4-alkyloxycinnamic acids was studied and some measurements were also made on 4-hexadecyloxybenzoic acid. The cinnamic acid results were analyzed to give information about the gross average molecular conformation in the smectic C phase. The implications of these results for the fast molecular rotations known to occur in smectic C phases are briefly discussed.
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页码：257 / 264
页数：8
相关论文
共 20 条
[1]   MOLECULAR ARRANGEMENT IN MESOPHASES OF SOME P-N-ALKOXYBENZOIC ACIDS [J].
BLUMSTEIN, A ;
PATEL, L .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1978, 48 (3-4) :151-164
[2]   A DEUTERIUM NMR-STUDY OF CHAIN ORDERING IN THE LIQUID-CRYSTALS 4,4'-DI-NORMAL-HEPTYLOXYAZOXYBENZENE AND 4-NORMAL-OCTYL-4'-CYANOBIPHENYL [J].
BODEN, N ;
CLARK, LD ;
BUSHBY, RJ ;
EMSLEY, JW ;
LUCKHURST, GR ;
STOCKLEY, CP .
MOLECULAR PHYSICS, 1981, 42 (03) :565-594
[3]   AN X-RAY STUDY OF THE PARA-N-ALKOXYBENZOIC ACIDS .6. ISOTYPIC CRYSTAL-STRUCTURES OF 4 SMECTOGENIC ACIDS HAVING 7, 8, 9, AND 10 ALKYL CHAIN CARBON-ATOMS [J].
BRYAN, RF ;
HARTLEY, P ;
MILLER, RW ;
SHEN, MS .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1980, 62 (3-4) :281-309
[4]   AN X-RAY STUDY OF THE PARA-NORMAL-ALKOXYCINNAMIC ACIDS .3. CRYSTAL-STRUCTURES OF 4 NEMATOGENIC ACIDS HAVING 2 4 6 AND 8 ALKYL CHAIN CARBON-ATOMS [J].
BRYAN, RF ;
HARTLEY, P .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1981, 69 (1-2) :47-70
[5]  
CHARVOLIN J, 1979, MOL PHYSICS LIQUID C, P343
[6]  
Chistyakov I. G., 1976, Soviet Physics - Crystallography, V21, P314
[7]   X-RAY-DIFFRACTION OF SMECTIC PHASES OF N-(PARA-NORMAL-HEPTYLOXYBENZYLIDENE)-PARA'-NORMAL-PENTYLANILINE [J].
DEJEU, WH ;
DEPOORTER, JA .
PHYSICS LETTERS A, 1977, 61 (02) :114-116
[8]   EXPERIMENTAL-EVIDENCE CONCERNING 2 DIFFERENT KINDS OF SMECTIC-C TO SMECTIC-A TRANSITIONS [J].
DEVRIES, A .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1977, 41 (02) :27-31
[9]   WHY THE MOLECULES ARE TILTED IN ALL SMECTIC A PHASES, AND HOW THE LAYER THICKNESS CAN BE USED TO MEASURE ORIENTATIONAL DISORDER [J].
DEVRIES, A ;
EKACHAI, A ;
SPIELBERG, N .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1979, 49 (05) :143-152
[10]   X-RAY-DIFFRACTION AND POLYMORPHISM OF SMECTIC LIQUID-CRYSTALS .1. A-MODIFICATIONS, B-MODIFICATIONS AND C-MODIFICATIONS [J].
DIELE, S ;
SACKMANN, H ;
BRAND, P .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1972, 16 (1-2) :105-&
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