Guest effect on nematic-isotropic phase transition temperature of liquid crystal 6CHBT

被引：10

作者：

Bauman, D ^{[1
]}

Solczynski, J ^{[1
]}

Chrzumnicka, E ^{[1
]}

机构：

[1] Poznan Tech Univ, Inst Phys, PL-60965 Poznan, Poland

来源：

ACTA PHYSICA POLONICA A | 1997年 / 92卷 / 06期

关键词：

D O I：

10.12693/APhysPolA.92.1151

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The polarized absorption spectra of seven dichroic azo dyes dissolved in the nematogenic liquid crystal host 6CHBT have been recorded as a function of temperature. On the basis of these spectra, the guest order parameter has been determined. Moreover, the influence of the dye addition on the behaviour of the guest-host mixture in the vicinity of the nematic-isotropic phase transition has been examined. The experimental results have been compared in some details with the calculations done on the basis of the mean field theory for binary mixtures.

引用

页码：1151 / 1161

页数：11

共 31 条

[1] OPTICAL-ACTIVITY OF ORIENTED MOLECULES .10. ANALYSIS OF THE N-PI-STAR TRANSITION OF 4-EN-3-ONE STEROIDS AND COMPARISON OF THE ORDER PARAMETERS OF HOST AND GUEST IN A COMPENSATED NEMATIC PHASE
ALTSCHUH, J
WEILAND, R
KOSACK, JV
KUBALL, HG
[J]. BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 1984, 88 (06): : 562 - 568
[2] INFLUENCE OF SUBSTITUENT LENGTH IN DICHROIC DYE MOLECULES ON THE ORIENTATIONAL PROPERTIES OF GUEST-HOST LIQUID-CRYSTAL MIXTURES
BAUMAN, D
MARTYNSKI, T
MYKOWSKA, E
[J]. LIQUID CRYSTALS, 1995, 18 (04) : 607 - 613
[3] GUEST-HOST INTERACTIONS IN NEMATIC P-CYANO-P'-ALKYLPHENYLCYCLOHEXANES
BAUMAN, D
MORYSON, H
JADZYN, J
[J]. ACTA PHYSICA POLONICA A, 1994, 85 (03) : 553 - 562
[4] GUEST INFLUENCE ON THE DIPOLAR ASSOCIATION OF THE NEMATIC LIQUID-CRYSTAL HOST
BAUMAN, D
FAN, ZX
HAASE, W
[J]. ACTA PHYSICA POLONICA A, 1991, 80 (04) : 545 - 552
[5] COMPARATIVE STUDIES OF THE DEGREE OF ORDER OF THE GUEST AND HOST MOLECULES IN 4-CYANO-4'-N-HEPTYL-P-PHENYLCYCLOHEXANE (PCH7) MIXTURES
BAUMAN, D
[J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1989, 174 : 1 - 10
[6] Intermolecular interactions in mixtures of dichroic dyes with n-alkyl-4(4-isothiocyanatophenyl)bicyclo[2,2,2] octanes
Bauman, D
Wasik, A
Jadzyn, J
[J]. LIQUID CRYSTALS, 1996, 20 (02) : 195 - 200
[7] Guest-host interactions in dichroic dye-liquid crystal mixtures in smectic A and nematic phases
Bauman, D
Moryson, H
[J]. JOURNAL OF MOLECULAR STRUCTURE, 1997, 404 (1-2) : 113 - 120
[8] THE STUDY OF THE GUEST EFFECT ON THE NEMATIC PHASE STABILIZATION
BAUMAN, D
[J]. MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1988, 159 : 197 - 218
[9] VAN DER WAALS VOLUMES + RADII
BONDI, A
[J]. JOURNAL OF PHYSICAL CHEMISTRY, 1964, 68 (03) : 441 - +
[10] *CHEM SOC, 1958, TABL INT DIST CONF M

← 1 2 3 4 →