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

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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

Czech description

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.

Type

O - Miscellaneous

CEP classification

CC - Organic chemistry

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2005

Confidentiality

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