Activation energies for metastable to stable phase transition of 4,4′-di-n-heptyl-oxyazoxybenzene

被引：1
|
作者：
Rachwalska, M [1 ]
机构：
[1] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2004年 / 78卷 / 01期
关键词：
activation energies; adiabatic calorimetry; liquid crystals; phase transition : metastable; phase -> stable phase;
D O I：
10.1023/B:JTAN.0000042180.79973.81
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The paper studies metastable phases of 4,4'-di-n-heptyloxyazoxybenzene ( liquid crystal substance) using adiabatic calorimetry. The process of transformation between metastable and stable phases is described quantitatively. The conclusion concerns activation energies for metastable phase to stable phase transition.
引用
收藏
页码：343 / 348
页数：6
相关论文
共 50 条
  • [21] The electronic nature of the substituents and the structure of 4,4′-dipyridilium dications.: The crystal structure of N,N′-di(carbethoxymethyl)-4,4′-dipyridilium diperchlorate
    Vishnyakov, AY
    Polishchuk, AP
    Polishchuk, IY
    CRYSTALLOGRAPHY REPORTS, 2001, 46 (06) : 967 - 970
  • [22] The electronic nature of the substituents and the structure of 4,4′-dipyridilium dications. The crystal structure of N,N′-di(carbethoxymethyl)-4,4′-dipyridilium diperchlorate
    A. Yu. Vishnyakov
    A. P. Polishchuk
    I. Yu. Polishchuk
    Crystallography Reports, 2001, 46 : 967 - 970
  • [23] The electronic nature of the substituents and the structure of 4,4'-dipyridilium dications. The crystal structure of N,N'-di(carbethoxymethyl)-4,4'-dipyridilium diperchlorate
    Vishnyakov, A.Yu.
    Polishchuk, A.P.
    Polishchuk, I.Yu.
    Kristallografiya, 2001, 46 (06): : 1049 - 1054
  • [24] MOLECULAR DYNAMIC INVESTIGATIONS ON 4,4'-DI-N-PENTYLOXY-AZOXYBENZENE
    PHUC, NX
    JANIK, J
    NATKANIEC, I
    KRESSE, H
    WIEGELEBEN, A
    CHRUSCIEL, D
    CHRUSCIEL, J
    JANIK, J
    URBAN, S
    WROBEL, S
    ZEITSCHRIFT FUR CHEMIE, 1986, 26 (01): : 34 - 35
  • [25] CALCULATION OF PRINCIPAL MOLECULAR POLARIZABILITY OF SOME 4,4'-DI-N-ALKOXYAZOBENZENES AND SOME 4,4'-DI-N-ALKOXYAZOXYBENZENES FROM PRINCIPAL DIELECTRIC CONSTANTS OF NEMATIC LAYERS
    AXMANN, A
    MOLECULAR CRYSTALS, 1968, 3 (04): : 471 - +
  • [26] PHASE-DIAGRAM OF 4,4'-DI-N-BUTYLOXYAZOXYBENZENE - NEUTRON-DIFFRACTION MEASUREMENTS AT HIGHER PRESSURES
    JANIK, JA
    MAYER, J
    HABRYLO, S
    NATKANIEC, I
    ZAJAC, W
    JANIK, JM
    STANEK, T
    PHASE TRANSITIONS, 1992, 37 (04) : 239 - 251
  • [27] 4,4'-DI(N)HEXOXYBENZALAZINE - CRYSTAL AND MOLECULAR-STRUCTURE AND PHASE CHARACTERIZATION OF THE LIQUID-CRYSTALLINE COMPOUND
    ASTHEIMER, H
    WALZ, L
    HAASE, W
    LOUB, J
    MULLER, HJ
    GALLARDO, M
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1985, 131 (3-4): : 343 - 351
  • [28] Electronic nature of substituents and the structure of 4,4′-dipyridylium dications:: Crystal structure of N,N′-di(2-carboxyethyl)-4,4′-dipyridylium diperchlorate
    Polishchuk, AP
    Polishchuk, IY
    Klimusheva, GV
    Gridyakina, AV
    Bordyug, AB
    Grineva, LG
    CRYSTALLOGRAPHY REPORTS, 2005, 50 (03) : 415 - 418
  • [29] Electronic nature of substituents and the structure of 4,4′-dipyridylium dications: Crystal structure of N, N′-di(2-carboxyethyl)-4,4′-dipyridylium diperchlorate
    A. P. Polishchuk
    I. Yu. Polishchuk
    G. V. Klimusheva
    A. V. Gridyakina
    A. B. Bordyug
    L. G. Grineva
    Crystallography Reports, 2005, 50 : 415 - 418
  • [30] catena-poly[[[diaquacadmium(II)]-di-μ-4,4′-trimethylenedipyridine-κ2N:N′] dinitrate 4,4′-trimethylenedipyridine monohydrate]
    Paz, FAA
    Bond, AD
    Khimyak, YZ
    Klinowski, J
    ACTA CRYSTALLOGRAPHICA SECTION E-STRUCTURE REPORTS ONLINE, 2002, 58 : M730 - M732
12345