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Title: Enhancement in the thermodynamic, electrical and optical properties of hexabutoxytriphenylene due to copper nanoparticles
Authors: Yaduvanshi, Priti
Mishra, Avneesh
Kumar, Sandeep
Dhar, Ravindra
Keywords: Columnar hexagonal phase
Aromatic cores
Homeotropic alignment
Ionic conductivity
Surface plasmons
Issue Date: Aug-2015
Publisher: Elsevier B.V
Citation: Journal of Molecular Liquids, 2015, Vol. 208, p 160-164
Abstract: In the present article, we have studied the effect of copper nano-particles on the thermal, optical and dielectric parameters of a liquid crystalline material 2,3,6,7,10,11-hexabutyloxytriphenylene (in short HAT4) showing wide temperature range (~ 65 °C) hexatic columnar mesophase. A composite has been prepared by dispersing 0.6 wt.% of copper nano-particles. UV–vis spectroscopy has been used to record the absorption spectra. It has been observed that the presence of copper nano-particles introduces surface plasmon resonance and reduces the optical band gap of HAT4. Though isotropic to mesophase transition temperature is unaffected but mesophase-crystal transition temperature has decreased and hence range of the mesophase has enhanced due to the presence of copper nano-particles. While dc conductivity has increased by about two orders of magnitudes, dielectric permittivity has also moderately increased. With the enhanced properties, HAT4-copper nano-particle composite is useful for one dimensional conduction and photovoltaic applications.
Description: Restricted Access.
ISSN: 0167-7322
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Copyright: 2015 Elsevier B.V.
Appears in Collections:Research Papers (SCM)

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