Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines

Two novel homologous series of kinked (Z-shaped) liquid crystalline compounds were synthesized using a short two-step reaction. Yields of 30%–40% and 51%–57% were obtained for 2-(4′-alkoxybiphen-4-yl)-6-methylquinolines (nO-PPQMe, n = 3–8) and 2-(6-alkoxynaphthalen-2-yl)-6-methylquinolines (iO-NpQMe...

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Detalles Bibliográficos
Autores principales: Chia, Win-Long, Kuo, Ker-Non, Lin, Shao-Hsun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Molecular Diversity Preservation International (MDPI) 2014
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4057692/
https://www.ncbi.nlm.nih.gov/pubmed/24798752
http://dx.doi.org/10.3390/ijms15057579
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author Chia, Win-Long
Kuo, Ker-Non
Lin, Shao-Hsun
author_facet Chia, Win-Long
Kuo, Ker-Non
Lin, Shao-Hsun
author_sort Chia, Win-Long
collection PubMed
description Two novel homologous series of kinked (Z-shaped) liquid crystalline compounds were synthesized using a short two-step reaction. Yields of 30%–40% and 51%–57% were obtained for 2-(4′-alkoxybiphen-4-yl)-6-methylquinolines (nO-PPQMe, n = 3–8) and 2-(6-alkoxynaphthalen-2-yl)-6-methylquinolines (iO-NpQMe, i = 3–7), respectively. Spectral analyses agreed with the expected structures. The thermotropic behaviors of these compounds were investigated using polarized optical microscopy and differential scanning calorimetry. An enantiotropic nematic phase appeared to be the main mesophase in these two series of kinked liquid crystalline compounds, and an additional enantiotropic smectic C phase appeared when n = 8.
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spelling pubmed-40576922014-06-16 Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines Chia, Win-Long Kuo, Ker-Non Lin, Shao-Hsun Int J Mol Sci Article Two novel homologous series of kinked (Z-shaped) liquid crystalline compounds were synthesized using a short two-step reaction. Yields of 30%–40% and 51%–57% were obtained for 2-(4′-alkoxybiphen-4-yl)-6-methylquinolines (nO-PPQMe, n = 3–8) and 2-(6-alkoxynaphthalen-2-yl)-6-methylquinolines (iO-NpQMe, i = 3–7), respectively. Spectral analyses agreed with the expected structures. The thermotropic behaviors of these compounds were investigated using polarized optical microscopy and differential scanning calorimetry. An enantiotropic nematic phase appeared to be the main mesophase in these two series of kinked liquid crystalline compounds, and an additional enantiotropic smectic C phase appeared when n = 8. Molecular Diversity Preservation International (MDPI) 2014-05-02 /pmc/articles/PMC4057692/ /pubmed/24798752 http://dx.doi.org/10.3390/ijms15057579 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland http://creativecommons.org/licenses/by/3.0/ This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Chia, Win-Long
Kuo, Ker-Non
Lin, Shao-Hsun
Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines
title Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines
title_full Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines
title_fullStr Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines
title_full_unstemmed Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines
title_short Synthesis and Thermotropic Studies of Two Novel Series of Kinked Liquid Crystals: 2-(4′-Alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-Alkoxynaphthalen-2-yl)-6-methylquinolines
title_sort synthesis and thermotropic studies of two novel series of kinked liquid crystals: 2-(4′-alkoxybiphen-4-yl)-6-methylquinolines and 2-(6-alkoxynaphthalen-2-yl)-6-methylquinolines
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4057692/
https://www.ncbi.nlm.nih.gov/pubmed/24798752
http://dx.doi.org/10.3390/ijms15057579
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AT kuokernon synthesisandthermotropicstudiesoftwonovelseriesofkinkedliquidcrystals24alkoxybiphen4yl6methylquinolinesand26alkoxynaphthalen2yl6methylquinolines
AT linshaohsun synthesisandthermotropicstudiesoftwonovelseriesofkinkedliquidcrystals24alkoxybiphen4yl6methylquinolinesand26alkoxynaphthalen2yl6methylquinolines

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