Enhancement of the Electro-Optical, Photoluminescent and Plasmonic properties of Gold Nano Particles (GNPs) doped Cholesteric Liquid Crystals Matrix

The optimized investigations of gold nanoparticles (GNP) doped cholesteric liquid crystals revealed the vibrant transitions of liquid crystal phases. Thermodynamical investigation observed the critical temperatures of different phases. The different concentration of gold nanoparticles induced in cholesteric liquid crystal shows the extensive assortment of various phases as well as reduced the cholesteric–blue phase-isotropic transition temperature from 105 OC to 101 OC. The predisposition of the twisting of molecules in the gold nanoparticles doped cholesteric liquid crystal samples was confirmed by the electro-optical examination. Dielectric investigation recorded the effect of gold nanoparticles in cholesteric liquid crystal. It signatures that the dielectric permittivity and absorption reduced from 11.57 to 10.2 and 14 to 13.2 respectively. Plasmonic behavior of the CLC-Au NPs matrix modulated by the wavelength shifting. Enrichment of the functional area of the material surface and decrement of photoluminescence intensity has been experiential by the doping of gold nanoparticles in a cholesteric liquid crystals matrix.