Synthesis of Silver Nanoparticles with Different Decoration Forms Dispersed in Nematic Liquid Crystals

Document Type : Original Article


1 department of physics, faculty of science, Arish University, Arish, Egypt

2 Physics department, Faculty of science, Arish University, 45511, Arish, Egypt

3 National Research Centre

4 Microwave Physics and Dielectrics, Physics Research Division, National Research Centre (NRC), Giza, 12622, Egypt


The formed lyotropic liquid crystals phases via polyvinylpyrrolidone (PVP) and cetyltrimethyl ammonium bromide (CTAB), adopting the hydrothermal and seed-mediate techniques was prepared to reduce silver nitrate (AgNO3) for shape and size controlled silver oxide nanoparticles production. Starting the reaction, PVP was coordinated with Ag+ to carry out the oxide forms of silver nanoparticles. The silver nanoparticles were characterized by UV-vis spectrometer, scanning electron microscopy (SEM), polarizing optical microscope (POM), dynamic light scattering (DLS), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). Results have shown that, XRD confirmed the lattice structure of synthesized silver oxide nanoparticles. The topographic behavior of electronic surface scanning exhibits nice porous nanoparticles of silver oxide. In addition, the DSC thermal bands have a good agreement with POM transition phases. Long silver nanowires with lengths of 10-17 μmand width 0.8-2.6 m , while the pores size of porous silver nanoparticles with varying sizes from 55 nm to 118 nm are produced. The produced nano particles in nematic cholesteric liquid crystals has significant influence on the self-assemblies of the cholesteric system


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