Preparing and studying of Au Nanocomposites Synthesized with different polymer matrix

¹ Department of Material Science, Polymer Research Centre, University of Basrah, Iraq
² Jabir Ibn Hayyan Medical university, Najaf, Iraq
³ Department of Medical Physics, Hilla University College, Babylon, Iraq
⁴ Medical Laboratory Technology Department, College of Medical Technology, the Islamic University, Najaf, Iraq
⁵ National University of Science and Technology, Dhi qar, Iraq
⁶ Computer Engineering Techniques Department, College of Engineering Techniques, Al-Kitab University, Iraq
⁷ Mechanical engineering Department, University Center for research and Development, Chandigarh University, Mohali, Punjab, 140413, India
⁸ Department of Mechanical Engineering, Lebanese American University, Kraytem 1102-2801, Beirut, Lebanon
⁹ Faculty of Mechanical Engineering, Opole University of Technology, 45-758 Opole, Poland

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Abstract

This work investigates the impact of several polymer matrix types, which are utilised as a capping layer around gold particles, on the optical properties. Nanocomposite materials consisting of gold and polymers such as polyethylene oxide, polyvinyl alcohol, and polyvinyl pyrrolidone were produced by a chemical reduction process. Tri sodium citrate was employed as the reducing agent. using the drop casting approach, nanocomposites based on gold were successfully put as a film on glass substrates.. An investigation was conducted to determine the influence of the polymer matrix type on the optical properties, including surface plasmon resonance, direct band gap, and indirect band gap. Furthermore, the absorption spectra of the materials that were synthesised demonstrated that the selection of the polymer that was utilised during the preparation process has a considerable impact on the location of the plasmonic absorption peak as well as the magnitude of the energy gap. Within the range of 1.9 to 2.3 electron volts (eV), the band gaps were found to be present.