Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal
The electrorheological (ER) properties of composite materials consisting of a nematic liquid crystal (LC) and gold nanoparticles (GNPs) coated with bistolane-based mesogenic groups were studied. The GNPs were coated by normal alkyl chains and the fluorescent LC compounds, of which the molecular stru...
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doaj-763f4714883a451db2aaf0a7604ae4422021-02-17T00:02:35ZengMDPI AGCrystals2073-43522021-02-011119219210.3390/cryst11020192Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid CrystalKosuke Kaneko0Kosuke Yamashita1Daiki Fujioka2Kimiyoshi Kaneko3Kiyomi Fuchigami4Takeshi Hashishin5Tomonori Hanasaki6Department of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanDepartment of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanDepartment of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanResearch Organization of Science and Technology, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanDepartment of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanFaculty of Advanced Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, JapanDepartment of Applied Chemistry, College of Life Sciences, Ritsumeikan University, 1-1-1 Nojihigashi, Kusatsu 525-8577, JapanThe electrorheological (ER) properties of composite materials consisting of a nematic liquid crystal (LC) and gold nanoparticles (GNPs) coated with bistolane-based mesogenic groups were studied. The GNPs were coated by normal alkyl chains and the fluorescent LC compounds, of which the molecular structure was similar to that of the LC matrix. The dispersity of the GNPs in the nematic LC was investigated by polarizing optical microscopy (POM). In order to improve the ER effect of the composite, a simple strategy was investigated from the viewpoint of a material design in surface-modified GNPs by lateral substitution of the mesogenic groups. The presence of the GNPs in the nematic LC led to a slightly enhanced ER effect compared to that observed for only the nematic LC. This study demonstrates the potential of a hybrid system consisting of LCs and GNPs to yield a larger ER effect.https://www.mdpi.com/2073-4352/11/2/192liquid crystalselectro rheologygold nanoparticlesfluorescence |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kosuke Kaneko Kosuke Yamashita Daiki Fujioka Kimiyoshi Kaneko Kiyomi Fuchigami Takeshi Hashishin Tomonori Hanasaki |
spellingShingle |
Kosuke Kaneko Kosuke Yamashita Daiki Fujioka Kimiyoshi Kaneko Kiyomi Fuchigami Takeshi Hashishin Tomonori Hanasaki Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal Crystals liquid crystals electro rheology gold nanoparticles fluorescence |
author_facet |
Kosuke Kaneko Kosuke Yamashita Daiki Fujioka Kimiyoshi Kaneko Kiyomi Fuchigami Takeshi Hashishin Tomonori Hanasaki |
author_sort |
Kosuke Kaneko |
title |
Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal |
title_short |
Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal |
title_full |
Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal |
title_fullStr |
Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal |
title_full_unstemmed |
Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal |
title_sort |
electrorheological effect of gold nanoparticles coated with fluorescent mesogenic groups dispersed in nematic liquid crystal |
publisher |
MDPI AG |
series |
Crystals |
issn |
2073-4352 |
publishDate |
2021-02-01 |
description |
The electrorheological (ER) properties of composite materials consisting of a nematic liquid crystal (LC) and gold nanoparticles (GNPs) coated with bistolane-based mesogenic groups were studied. The GNPs were coated by normal alkyl chains and the fluorescent LC compounds, of which the molecular structure was similar to that of the LC matrix. The dispersity of the GNPs in the nematic LC was investigated by polarizing optical microscopy (POM). In order to improve the ER effect of the composite, a simple strategy was investigated from the viewpoint of a material design in surface-modified GNPs by lateral substitution of the mesogenic groups. The presence of the GNPs in the nematic LC led to a slightly enhanced ER effect compared to that observed for only the nematic LC. This study demonstrates the potential of a hybrid system consisting of LCs and GNPs to yield a larger ER effect. |
topic |
liquid crystals electro rheology gold nanoparticles fluorescence |
url |
https://www.mdpi.com/2073-4352/11/2/192 |
work_keys_str_mv |
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