Electrorheological Effect of Gold Nanoparticles Coated with Fluorescent Mesogenic Groups Dispersed in Nematic Liquid Crystal
| Autor: | Kiyomi Fuchigami, Kosuke Yamashita, Kimiyoshi Kaneko, Takeshi Hashishin, Kosuke Kaneko, Daiki Fujioka, Tomonori Hanasaki |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Materials science
General Chemical Engineering Composite number Dispersity 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention Inorganic Chemistry liquid crystals Optical microscope Liquid crystal law lcsh:QD901-999 General Materials Science Alkyl chemistry.chemical_classification electro rheology Mesogen 021001 nanoscience & nanotechnology Condensed Matter Physics Fluorescence 0104 chemical sciences chemistry Chemical engineering Colloidal gold gold nanoparticles lcsh:Crystallography fluorescence 0210 nano-technology |
| Zdroj: | Crystals Volume 11 Issue 2 Crystals, Vol 11, Iss 192, p 192 (2021) |
| ISSN: | 2073-4352 |
| DOI: | 10.3390/cryst11020192 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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