Schiff Base Liquid Crystalline Compounds With Dispersed Citrate Capped Gold Nanoparticles - Optical and Textural Analysis

Abstract

In this paper, 20 µl citrate capped Gold (Au) nanoparticles are dispersed in Schiff base Liquid Crystalline compounds 6O.Om (m = 7 and 9) and characterizations are carried-out to observe the changes occurred with the dispersion of nanoparticles in Liquid Crystalline compounds. The Polarizing Microscopy (POM) technique is used to measure the phase transition temperatures. Differential Scanning Calorimetry (DSC) is used to determine the transition temperatures and enthalpy values. Further characterization is carried-out by Scanning Electron Microscopy (SEM). The nematic transition temperature is decreased by 1 o C with the dispersion of citrate capped Au nanoparticles into the Liquid Crystalline compounds. Image processing technique of textural analysis is also carried-out to identify the statistical parameters of the images and their transition temperatures.

Preparation of Hydrogel Nanocomposite Containing Gold Nanoparticles With Unique Swelling/Deswelling Properties

“…Properties of AuNPs-PAA The synthesis of AuNPs resulted in a rubies color colloidal, indicated small particles in nanometer range. 16 Gold chloride reduction with sodium citrate resulted in spherical gold nanoparticles with average diameters of 13.27±2.43 nm (Fig. -1B) that are stable, because of repulsive electrostatic forces of nanoparticles in the colloid suspension.…”

“…AuNPs were synthesized using a chemical reduction method as described previously. 16 The AuNPs were then characterized by UV-Vis spectrophotometry (Genesys 10S) and Transmission Electron Microscopy (JEOL JEM-1400).…”