Calorimetric study of octylcyanobiphenyl liquid crystal confined to a controlled-pore glass

被引:115
|
作者
Kutnjak, Z
Kralj, S
Lahajnar, G
Zumer, S
机构
[1] Jozef Stefan Inst, Ljubljana 1001, Slovenia
[2] Univ Maribor, Fac Educ, Lab Phys Complex Syst, SLO-2000 Maribor, Slovenia
[3] Univ Ljubljana, Fac Math & Phys, Dept Phys, Ljubljana 1000, Slovenia
来源
PHYSICAL REVIEW E | 2003年 / 68卷 / 02期
关键词
D O I
10.1103/PhysRevE.68.021705
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
We present a calorimetric study of the phase behavior of octylcyanobiphenyl (8CB) liquid crystal confined to a controlled-pore glass (CPG). We used CPG matrices with characteristic void diameters ranging from 400 to 20 nm. In bulk we obtain weakly first-order isotropic to nematic (I-N) phase transition and nearly continuous character of the nematic to smectic-A (N-SmA) phase transition. In all CPG matrices the I-N transition remains weakly first order, while the N-SmA one becomes progressively suppressed with decreasing CPG pore radius. With decreased pore diameters both phase transition temperatures monotonously decrease following similar trends, but increasing the stability range of the N phase. The heat-capacity response at the weakly first order I-N and continuous N-SmA phase transitions gradually approaches the tricritical-like and three-dimensional XY behavior, respectively. The main observed features were explained using a bicomponent single pore type phenomenological model.
引用
收藏
页数:12
相关论文
共 50 条
  • [21] Oligosaccharide synthesis on controlled-pore glass as solid phase material
    Heckel, A
    Mross, E
    Jung, KH
    Rademann, J
    Schmidt, RR
    SYNLETT, 1998, (02) : 171 - +
  • [22] SEPARATION OF VISUAL PIGMENTS ON COLUMNS OF CONTROLLED-PORE GLASS BEADS
    FAGER, LY
    FAGER, RS
    ANALYTICAL BIOCHEMISTRY, 1978, 85 (01) : 98 - 104
  • [23] SEPARATION OF THYROIDAL IODOAMINO ACIDS ON COLUMNS OF CONTROLLED-PORE GLASS
    WILLIAMS, AD
    FREEMAN, DE
    FLORSHEIM, WH
    JOURNAL OF CHROMATOGRAPHIC SCIENCE, 1971, 9 (10) : 619 - +
  • [24] Oligosaccharide Synthesis on Controlled-Pore Glass as Solid Phase Material
    Heckel, A.
    Mross, E.
    Jung, K.-H.
    Rademann, J.
    Synlett, (02):
  • [25] Caustic-Stable, Controlled-Pore Glass-Ceramics
    Greene, David J.
    Daly, Dermot
    Doyle, James J.
    Rafferty, Aran
    CRYSTAL GROWTH & DESIGN, 2021, 21 (02) : 809 - 816
  • [26] ADSORPTION CHROMATOGRAPHY OF RIBONUCLEIC-ACIDS ON CONTROLLED-PORE GLASS
    MIZUTANI, T
    JOURNAL OF CHROMATOGRAPHY, 1983, 262 (JUN): : 441 - 445
  • [27] PURIFICATION OF INTERLEUKIN-2 USING CONTROLLED-PORE GLASS
    GRAHAM, R
    HAMERSLEY, P
    HUNG, C
    CROWLEY, G
    INTERNATIONAL JOURNAL OF IMMUNOPHARMACOLOGY, 1982, 4 (04): : 379 - 379
  • [28] SYNTHESIS OF SPHINGOSINE CONJUGATE WITH CONTROLLED-PORE GLASS-BEADS
    RUAN, FQ
    YAMAMURA, S
    HAKOMORI, S
    IGARASHI, Y
    TETRAHEDRON LETTERS, 1995, 36 (37) : 6615 - 6618
  • [29] IONIC EFFECTS IN CHROMATOGRAPHY OF PROTEINS ON COLUMNS OF CONTROLLED-PORE GLASS
    CRONE, HD
    DAWSON, RM
    SMITH, EM
    JOURNAL OF CHROMATOGRAPHY, 1975, 103 (01): : 71 - 75
  • [30] PORE CONDENSATION IN CONTROLLED-PORE GLASS - AN EXPERIMENTAL TEST OF THE SAAM-COLE THEORY
    FINDENEGG, GH
    GROSS, S
    MICHALSKI, T
    CHARACTERIZATION OF POROUS SOLIDS III, 1994, 87 : 71 - 80