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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)

Tamba, Maria-Gabriela; Yu, Chih Hao; Tang, Bai Jia; Welch, Christopher; Kohlmeier, Alexandra; Schubert, Christopher P.; Mehl, Georg H.

Authors

Maria-Gabriela Tamba

Chih Hao Yu

Bai Jia Tang

Christopher Welch

Alexandra Kohlmeier

Christopher P. Schubert



Abstract

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.

Journal Article Type Article
Publication Date 2014-04
Journal Materials
Electronic ISSN 1996-1944
Publisher MDPI
Peer Reviewed Peer Reviewed
Volume 7
Issue 5
Pages 3494-3511
APA6 Citation Tamba, M., Yu, C. H., Tang, B. J., Welch, C., Kohlmeier, A., Schubert, C. P., & Mehl, G. H. (2014). 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). Materials, 7(5), (3494-3511). doi:10.3390/ma7053494. ISSN 1996-1944
DOI https://doi.org/10.3390/ma7053494
Keywords Nanocomposite, Liquid crystal, Nematic-nematic, Phase diagram, Dimer, Siloxane, Mixtures, Nanoparticles, Plasmonic, Gold
Publisher URL http://www.mdpi.com/1996-1944/7/5/3494
Copyright Statement This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Additional Information This is an open access article published in Materials, 2014, v.7 issue 5.

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Copyright Statement
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.



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