Sensor Responses Of Silver Based Plasmonic Nanoparticles Deposited On PS/P2VP

Shikha Kumari, Pratima Parashar Pandey*

School of Basic and Applied Sciences, IILM University, Gr. Noida, Uttar Pradesh, 201306, (INDIA)

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ABSTRACT – DOI: https://dx.doi.org/10.47204/EMSR.7.1.2025.001-011

The silver nano particles (Ag NPs) are characterized by modular and unparalleled plasmonic properties. The localized surface plasmon resonance (LSPR) property and their response to the local environment is decisive upon the size and shape of these particles. The LSPR property of nanoparticles has interdisciplinary applications in areas like chemistry, biology and material science with maximum utilization in optical, chemical and biological sensing applications. In this paper, a polymer system is used by blending of two polymers namely, polystyrene/poly (2-vinylpyridine) (PS/P2VP) (50:50) with the optimization technique. Silver nano particles of thickness 100, 150 and 200 nm deposited on (PS/P2VP) (50:50) were explored to observe the optical sensitivity. The size and distribution of nanoparticles in the matrices is affected by the nature of polymer composite embedded with silver nano particles. The polymer composites utilized in this study are found to have uniform distribution of nano particles of various sizes. Owing to the unique properties of silver nanoparticles and in order to develop latest plasmonic applications, the optical properties of the nanoparticles embedded in suitable polymer composite were explored. The size of the nanoparticle embedded into a particular polymer composite is the decisive factor for the sensing capability.