ANOMALOUS SMECTIC MESOMORPHISM OF 4,4'-DI-NORMAL-PENTYLOXYAZOXYBENZENE

被引：9

作者：

PRASAD, SN ^{[1
]}

VENUGOPALAN, S ^{[1
]}

BILLARD, J ^{[1
]}

机构：

[1] COLL FRANCE,PHYS MATIERE CONDENSEE LAB,F-75231 PARIS 5,FRANCE

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 1979年 / 49卷 / 09期

关键词：

D O I：

10.1080/00268947908070462

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Calorimetric and optical texture studies reveal the existence of a previously unrecognized, stable, highly ordered and enantiotropic smectic phase of C//5(4,4 prime -di-n-pentyloxyazoxybenzene). This represents a distinctly anomalous behavior as the next five homologs, C//6-C//1//0, do not exhibit such a highly ordered smectic phase. It is shown that configurational melting of the alkyl end-chains can largely account for the observed thermodynamic parameters of the solid-smectic transition of C//5.

引用

页码：271 / 278

页数：8

共 20 条

[1] RAMAN SCATTERING FROM NEMATIC LIQUID-CRYSTALLINE AZOXYBENZENES [J].

AMER, NM ;

SHEN, YR .

JOURNAL OF CHEMICAL PHYSICS, 1972, 56 (06) :2654-+

[2]

ARNOLD H, 1964, Z PHYS CHEM-LEIPZIG, V226, P146

[3]

BARRALL EM, 1974, LIQUID CRYSTALS PLAS, V2, P254

[4] VIBRATIONAL SPECTRA OF LIQUID CRYSTALS .I. CHANGES IN INFRARED SPECTRUM AT CRYSTAL-NEMATIC TRANSITION [J].

BULKIN, BJ ;

GRUNBAUM, D ;

SANTORO, AV .

JOURNAL OF CHEMICAL PHYSICS, 1969, 51 (04) :1602-&

[5] THERMODYNAMICS OF SOLUTIONS WITH LIQUID CRYSTAL SOLVENTS .2. SURFACE EFFECTS WITH NEMATOGENIC COMPOUNDS [J].

CHOW, LC ;

MARTIRE, DE .

JOURNAL OF PHYSICAL CHEMISTRY, 1969, 73 (04) :1127-&

[6] CALCULATION AND EXPERIMENTAL VERIFICATION OF EUTECTIC SYSTEMS WITH NEMATIC PHASES [J].

DEMUS, D ;

FIETKAU, C ;

SCHUBERT, R ;

KEHLEN, H .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1974, 25 (3-4) :215-232

[7] POLYMORPHISM OF MESOMORPHIC COMPOUND TEREPHTHAL-BIS-BUTYLANILINE (TBBA) [J].

DOUCET, J ;

LEVELUT, AM ;

LAMBERT, M .

PHYSICAL REVIEW LETTERS, 1974, 32 (06) :301-303

[8] MELTING OF ALIPHATIC CHAINS IN A SOLID REVERSIBLE SMECTIC-B TRANSITION [J].

DVOLAITS.M ;

POLDY, F ;

TAUPIN, C .

PHYSICS LETTERS A, 1973, A 45 (06) :454-456

[9]

Flory P.J., 1989, STAT MECH CHAIN MOL

[10]

KIROV S, 1975, MOL CRYST LIQUID CRY, V30, P59

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