1H NMR relaxometry in the TGBA* and TGBC*phases

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00459022" target="_blank" >RIV/68378271:_____/16:00459022 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1080/00150193.2016.1136725" target="_blank" >http://dx.doi.org/10.1080/00150193.2016.1136725</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/00150193.2016.1136725" target="_blank" >10.1080/00150193.2016.1136725</a>

Jazyk výsledku

angličtina

Název v původním jazyce

1H NMR relaxometry in the TGBA* and TGBC*phases

Popis výsledku v původním jazyce

In this work, recent results obtained by means of 1H NMR relaxation studies of liquid crystals, having a large range of thermal stability of the twist grain boundary (TGB) phases, are reviewed. In particular, three chiral rod-like lactate derivative mesogens, with the same chiral lateral chain, were investigated on the dynamic point of view. In the isotropic phase, three-exponential magnetization decay was observed and three distinct relaxation times were assigned to three specific molecular groups of these molecules (i.e. aromatic core, methyl and methylene groups). In the liquid crystalline phases the magnetization decay becomes mono-exponential and a single spin-lattice relaxation times is measured at each temperature. Focusing in the TGBA* and TGBC* phases, the main features of the dispersion curves (spin-lattice relaxation rates as a function of the Larmor frequency) in terms of molecular dynamics are discussed and compared.

Název v anglickém jazyce

1H NMR relaxometry in the TGBA* and TGBC*phases

Popis výsledku anglicky

In this work, recent results obtained by means of 1H NMR relaxation studies of liquid crystals, having a large range of thermal stability of the twist grain boundary (TGB) phases, are reviewed. In particular, three chiral rod-like lactate derivative mesogens, with the same chiral lateral chain, were investigated on the dynamic point of view. In the isotropic phase, three-exponential magnetization decay was observed and three distinct relaxation times were assigned to three specific molecular groups of these molecules (i.e. aromatic core, methyl and methylene groups). In the liquid crystalline phases the magnetization decay becomes mono-exponential and a single spin-lattice relaxation times is measured at each temperature. Focusing in the TGBA* and TGBC* phases, the main features of the dispersion curves (spin-lattice relaxation rates as a function of the Larmor frequency) in terms of molecular dynamics are discussed and compared.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ferroelectrics

ISSN

0015-0193

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

17-27

Kód UT WoS článku

000372065000002

EID výsledku v databázi Scopus

2-s2.0-84961255699