Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline Derivative
In this article, we report on the synthesis and characterization of crown-ether appended hexaazatrinaphthylene derivatives with two alkoxy chains. The complexation of a derivative having shorter alkoxy chains with metal ions, such as NaI and KI, prompts remarkable changes in the electronic propertie...
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doaj-f69f0b65532f484d95555983b01fbe2f2020-11-25T02:05:21ZengMDPI AGCrystals2073-43522020-05-011037737710.3390/cryst10050377Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline DerivativeKyosuke Isoda0Keigo Shimooka1Faculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, JapanFaculty of Engineering and Design, Kagawa University, 2217-20 Hayashi-cho, Takamatsu, Kagawa 761-0396, JapanIn this article, we report on the synthesis and characterization of crown-ether appended hexaazatrinaphthylene derivatives with two alkoxy chains. The complexation of a derivative having shorter alkoxy chains with metal ions, such as NaI and KI, prompts remarkable changes in the electronic properties of sold states, because of changing intermolecular interactions. Polarized optical microscopic observation, X-ray diffraction pattern measurement and differential scanning calorimetry reveal that a compound with longer alkoxy chains self-assembles into the formation of the columnar liquid-crystalline phase. Moreover, the addition of benzenesulphonic acid influences the self-assembled liquid-crystalline structures, as well as the electronic properties. The complexation of the derivative having longer alkoxy chains with benzenesulphonic acid induces a larger dipole moment, compared to that before complexation, thereby leading to the enhancement of intermolecular interaction, such as dipole-dipole interaction. Also, peaks in UV-vis absorption and fluorescent spectra show a dramatically bathochromic shift, due to their intermolecular interaction, such as the π-π interaction.https://www.mdpi.com/2073-4352/10/5/377liquid crystalssStimuli responsehexaazatrinaphthyleneelectron acceptor |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kyosuke Isoda Keigo Shimooka |
spellingShingle |
Kyosuke Isoda Keigo Shimooka Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline Derivative Crystals liquid crystals sStimuli response hexaazatrinaphthylene electron acceptor |
author_facet |
Kyosuke Isoda Keigo Shimooka |
author_sort |
Kyosuke Isoda |
title |
Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline Derivative |
title_short |
Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline Derivative |
title_full |
Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline Derivative |
title_fullStr |
Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline Derivative |
title_full_unstemmed |
Synthesis and Characterization of Crown-Ether Appended Hexaazatrinaphthylene-Based Liquid-Crystalline Derivative |
title_sort |
synthesis and characterization of crown-ether appended hexaazatrinaphthylene-based liquid-crystalline derivative |
publisher |
MDPI AG |
series |
Crystals |
issn |
2073-4352 |
publishDate |
2020-05-01 |
description |
In this article, we report on the synthesis and characterization of crown-ether appended hexaazatrinaphthylene derivatives with two alkoxy chains. The complexation of a derivative having shorter alkoxy chains with metal ions, such as NaI and KI, prompts remarkable changes in the electronic properties of sold states, because of changing intermolecular interactions. Polarized optical microscopic observation, X-ray diffraction pattern measurement and differential scanning calorimetry reveal that a compound with longer alkoxy chains self-assembles into the formation of the columnar liquid-crystalline phase. Moreover, the addition of benzenesulphonic acid influences the self-assembled liquid-crystalline structures, as well as the electronic properties. The complexation of the derivative having longer alkoxy chains with benzenesulphonic acid induces a larger dipole moment, compared to that before complexation, thereby leading to the enhancement of intermolecular interaction, such as dipole-dipole interaction. Also, peaks in UV-vis absorption and fluorescent spectra show a dramatically bathochromic shift, due to their intermolecular interaction, such as the π-π interaction. |
topic |
liquid crystals sStimuli response hexaazatrinaphthylene electron acceptor |
url |
https://www.mdpi.com/2073-4352/10/5/377 |
work_keys_str_mv |
AT kyosukeisoda synthesisandcharacterizationofcrownetherappendedhexaazatrinaphthylenebasedliquidcrystallinederivative AT keigoshimooka synthesisandcharacterizationofcrownetherappendedhexaazatrinaphthylenebasedliquidcrystallinederivative |
_version_ |
1724938530466037760 |