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http://hdl.handle.net/10119/10732
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ダブリン・コア・フィールド | 値 | 言語 |
contributor.author | Kan, Kai | en_US |
contributor.author | Kaneko, Daisaku | en_US |
contributor.author | Kaneko, Tatsuo | en_US |
date.accessioned | 2012-09-19T09:21:39Z | - |
date.available | 2012-09-19T09:21:39Z | - |
date.issued | 2011-05-16 | en_US |
identifier.uri | http://hdl.handle.net/10119/10732 | - |
description.abstract | A novel thermotropic liquid crystalline polymers poly{3-benzylidene amino-4-hydroxybenzoic acid (3,4-BAHBA)-co-trans-4-hydroxycinnamic acid (4HCA: trans-coumaric acid)} (Poly(3,4-BAHBA-co-4HCA)), was synthesized by the thermal polycondensation of 4HCA and 3,4-BAHBA, which was synthesized by a reaction of 3-amino-4-hydroxybenzoic acid (3,4-AHBA) with benzaldehyde. When the 4HCA compositions of Poly(3,4-BAHBA-co-4HCA)s were above 55 mol%, the copolymers showed a nematic, liquid crystalline phase. Differential scanning calorimetry (DSC) measurements of the copolymers showed a high glass transition temperature of more than 100 °C, sufficient for use in engineering plastics. Furthermore, the copolymers showed photoluminescence in an N-methylpyrrolidone (NMP) solution under ultraviolet (UV) light with a wavelength of 365 nm. Oriented film of Poly(3,4-BAHBA-co-4HCA) with a 4HCA composition of 75 mol% emitted polarized light, which was confirmed by fluorescent spectroscopy equipped with parallel and crossed polarizers. | en_US |
format.extent | 730731 bytes | - |
format.mimetype | application/pdf | - |
language.iso | en | en_US |
publisher | MDPI Publishing | en_US |
rights | © 2011 by the authors; licensee MDPI, Basel, Switzerland. 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/). | en_US |
subject | copolymerization | en_US |
subject | liquid crystals | en_US |
subject | polarized light emission | en_US |
subject | fluorescence | en_US |
title | Polarized Emission of Wholly Aromatic Bio-Based Copolyesters of a Liquid Crystalline Nature | en_US |
type.nii | Journal Article | en_US |
identifier.niiissn | 2073-4360 | en_US |
identifier.jtitle | Polymers | en_US |
identifier.volume | 3 | en_US |
identifier.issue | 2 | en_US |
identifier.spage | 861 | en_US |
identifier.epage | 874 | en_US |
relation.doi | 10.3390/polym3020861 | en_US |
rights.textversion | publisher | en_US |
language.iso639-2 | eng | en_US |
出現コレクション: | c10-1. 雑誌掲載論文 (Journal Articles)
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