Study of molecular dynamics in liquid-crystalline phases of CBOOA by high-resolution 13C NMR

被引：0

作者：

Hagiwara, Shoko ^{[1
]}

Iwama, Yoko ^{[1
]}

Fujimori, Hiroki ^{[1
]}

机构：

[1] Nihon Univ, Grad Sch Integrated Basci Sci, Setagaya Ku, Tokyo 1568550, Japan

来源：

COMPLEX SYSTEMS-BOOK 1 | 2008年 / 982卷

关键词：

CBOOA; liquid crystal; NMR; phase transition;

D O I：

暂无

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-resolution C-13 NMR experiments were performed in smectic Ad (SAd), nematic (N), and isotropic- liquid (1) phases of a liquid crystal, 4-octyloxy-N-(4-cyanobenzylidene)aniline (CBOOA). The temperature dependency of the spin-lattice relaxation times varied smoothly in the liquid-crystalline phases for almost all of the carbon atoms. However, for the carbon atom in the cyano-end group, a sharp change was detected at the SAd-N transition temperature. It is suggested that intermolecular interaction, which is not observed in the N phase, occurs in the SAd phase around the cyano-end group.

引用

页码：725 / 727

页数：3

共 50 条

[41] Structure of liquid-crystalline phases formed by N-acetyl-L-glutamic acid oligomeric benzyl esters -: 2H NMR study
Yoshino, A
Ishida, M
Yuki, H
Okabayashi, H
Masuda, H
O'Connor, CJ
COLLOID AND POLYMER SCIENCE, 2001, 279 (11) : 1144 - 1148
[42] C-13 CP MAS AND HIGH-RESOLUTION H-1, N-15 NMR-STUDY OF UREIDO SUGARS
WAWER, I
PIEKARSKABARTOSZEWICZ, B
TEMERIUSZ, A
CARBOHYDRATE RESEARCH, 1995, 267 (02) : 167 - 176
[43] Critical assessment of in vivo 13C NMR spectroscopy and gas-liquid chromatography in the study of adipose tissue composition
Thomas, EL
Cunnane, SC
Bell, JD
NMR IN BIOMEDICINE, 1998, 11 (06) : 290 - 296
[44] Biosynthesis, molecular structure, and domain architecture of potato suberin:: A 13C NMR study using isotopically labeled precursors
Yan, B
Stark, RE
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2000, 48 (08) : 3298 - 3304
[45] DFT study of molecular structures and 13C NMR parameters of two fluorinated biphenyls and their η6-tricarbonylchromium complexes
Gryff-Keller, Adam
Szczecinski, Przemyslaw
JOURNAL OF MOLECULAR STRUCTURE, 2015, 1091 : 222 - 227
[46] High resolution 13C NMR and DSC studies of interdigitated-noninterdigitated phase transition in a series of n-alkylammonium chlorides
Fojud, Z
Jurga, S
NUCLEAR MAGNETIC RESONANCE AND ITS APPLICATIONS, PROCEEDINGS, 2001, 33 : 172 - 174
[47] Additional insights from very-high-resolution 13C NMR spectra of long-chain n-alkanes
Alemany, Lawrence B.
MAGNETIC RESONANCE IN CHEMISTRY, 2013, 51 (10) : 605 - 613
[48] Solid-state 13C NMR study of annealing effect on the crystalline phase of poly(ethylene-co-methacrylic acid) ionomers
Mikage, Shohei
Matsukawa, Takayuki
Nakazawa, Chikako T.
Asano, Atsushi
POLYMER, 2022, 261
[49] Molecular dynamics and cold crystallization process in a liquid-crystalline substance with para-, ferro- and antiferro-electric phases as studied by dielectric spectroscopy and scanning calorimetry
Kolek, Lukasz
Massalska-Arodz, Maria
Adrjanowicz, Karolina
Rozwadowski, Tomasz
Dychton, Kamil
Drajewicz, Marcin
Kula, Przemyslaw
JOURNAL OF MOLECULAR LIQUIDS, 2020, 297
[50] Hydration of Wheat Flour Water-Unextractable Cell Wall Material Enables Structural Analysis of Its Arabinoxylan by High-Resolution Solid-State 13C MAS NMR Spectroscopy
Man, Wannes L. De
Chandran, C. Vinod
Wouters, Arno G. B.
Radhakrishnan, Sambhu
Martens, Johan A.
Breynaert, Eric
Delcour, Jan A.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY, 2022, 70 (34) : 10604 - 10610

← 1 2 3 4 5 →