Study of Polymorphism of 4-Hexyl-4′-isothiocyanatobiphenyl by Complementary Methods

被引：28

作者：

Jasiurkowska, Malgorzata ^{[1
]}

Zielinski, Piotr M. ^{[1
]}

Massalska-Arodz, Maria ^{[1
]}

Yamamura, Yasuhisa ^{[2
]}

Saito, Kazuya ^{[2
]}

机构：

[1] Polish Acad Sci, Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, Dept Chem, Tsukuba, Ibaraki 3058571, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2011年 / 115卷 / 43期

关键词：

CRYSTALLINE-E-PHASE; SMECTIC-E PHASE; X-RAY; DIELECTRIC-RELAXATION; VIBRATIONAL-SPECTRA; TRANSITION; MESOPHASE; PRESSURE; DIAGRAM; LIQUID;

D O I：

10.1021/jp201936x

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The results of adiabatic calorimetry, mid-infrared spectroscopy, X-ray diffraction, and polarized microscopy of 4-hexyl-4'-isothiocyanatobiphenyl are presented. Apart from the well-known isotropic liquid and smectic phases, calorimetric measurements indicate the existence of two stable crystalline phases. Quantitative analysis of infrared bands enabled the determination of phase transitions, observation of crystallization kinetics, and elucidation of the glass transition of the crystal-like smectic E phase. The structural information about the glass of the smectic E obtained from the diffraction studies is complemented by textures recorded by polarized microscopy.

引用

页码：12327 / 12335

页数：9

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