Synthesis and mesomorphic behaviour of novel nonsymmetrical bent-shaped mesogens based on 7- hydroxynaphthalene-2-carboxylic acid core

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F05%3A00014153" target="_blank" >RIV/60461373:22310/05:00014153 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Synthesis and mesomorphic behaviour of novel nonsymmetrical bent-shaped mesogens based on 7- hydroxynaphthalene-2-carboxylic acid core

Popis výsledku v původním jazyce

During the last decade concerted effort was devoted to recognition of relation between structure-and properties of bent-shaped liquid crystalline phases. Recently we found that mesomorphic behaviour of liquid crystals based on laterally substituted naphtalene-2,7-diole strongly depend on the character of the substituent. Up to now, only few reports concerning banana liquid crystals with a nonsymmetrical core have been shown. Herein we report synthesis and properties of new series of nonsymmetrical liquid crystals based on (8-lateraly substituted) 7-hydroxynaphtalene-2-carboxylic acid. The phase transition temperatures and values of enthalpies were determined from DSC measurements. The phases were characterized by texture observation and electro-opticalstudies. In the frequency range 10Hz - 10MHz dielectric spectroscopy has been performed to characterize studied phases.

Název v anglickém jazyce

Synthesis and mesomorphic behaviour of novel nonsymmetrical bent-shaped mesogens based on 7- hydroxynaphthalene-2-carboxylic acid core

Popis výsledku anglicky

During the last decade concerted effort was devoted to recognition of relation between structure-and properties of bent-shaped liquid crystalline phases. Recently we found that mesomorphic behaviour of liquid crystals based on laterally substituted naphtalene-2,7-diole strongly depend on the character of the substituent. Up to now, only few reports concerning banana liquid crystals with a nonsymmetrical core have been shown. Herein we report synthesis and properties of new series of nonsymmetrical liquid crystals based on (8-lateraly substituted) 7-hydroxynaphtalene-2-carboxylic acid. The phase transition temperatures and values of enthalpies were determined from DSC measurements. The phases were characterized by texture observation and electro-opticalstudies. In the frequency range 10Hz - 10MHz dielectric spectroscopy has been performed to characterize studied phases.

Druh

O - Ostatní výsledky

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2005

Kód důvěrnosti údajů

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