The Design and Investigation of Nanocomposites Containing Dimeric Nematogens and Liquid Crystal Gold Nanoparticles with Plasmonic Properties Showing a Nematic-Nematic Phase Transition (Nu-Nx/Ntb)
| Autor: | Christopher J. Welch, Bai Jia Tang, Alexandra Kohlmeier, Christopher P. J. Schubert, Georg H. Mehl, Maria-Gabriela Tamba, Chih Hao Yu |
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| Rok vydání: | 2014 |
| Předmět: |
Phase transition
nematic-nematic Materials science Dimer Nanoparticle lcsh:Technology Article chemistry.chemical_compound Differential scanning calorimetry Liquid crystal Organic chemistry General Materials Science liquid crystal lcsh:Microscopy lcsh:QC120-168.85 plasmonic Phase diagram lcsh:QH201-278.5 nanocomposite lcsh:T siloxane gold dimer phase diagram Crystallography mixtures chemistry lcsh:TA1-2040 Colloidal gold lcsh:Descriptive and experimental mechanics nanoparticles lcsh:Electrical engineering. Electronics. Nuclear engineering Nonane lcsh:Engineering (General). Civil engineering (General) lcsh:TK1-9971 |
| Zdroj: | Materials Volume 7 Issue 5 Pages 3494-3511 Materials, Vol 7, Iss 5, Pp 3494-3511 (2014) |
| ISSN: | 1996-1944 |
| Popis: | The construction of liquid crystal compositions consisting of the dimeric liquid crystal, CB_C9_CB (cyanobiphenyl dimer = 1'',9''-bis(4-cyanobiphenyl-4'-yl)nonane), and the range of nematic systems is explored. The materials include a laterally functionalized monomer, which was used to construct a phase diagram with CB_C9_CB, as well as one laterally linked dimer liquid crystal material and two liquid crystal gold nanoparticle (LC-Au-NPs) systems. For the Au-NP-LCs, the NP diameters were varied between ~3.3 nm and 10 nm. Stable mixtures that exhibit a nematic-nematic phase transition are reported and were investigated by POM (polarizing optical microscopy), DSC (differential scanning calorimetry) and X-ray diffraction studies. |
| Databáze: | OpenAIRE |
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