Effect of silane/amine-based dopants on polymer-metal interaction of sub-surface silver nanoparticulate films

Anju Jolly, Anjana Uday, S C Gurumurthy, M. P. Shilpa, Srivathsava Surabhi, Shridhar Mundinamani, Koduri Ramam, Murali Gedda, M. S. Murari, Jong-Ryul Jeong

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The optical and morphological properties of the vacuum-evaporated silver (Ag) nanoparticulate films on softened polyvinyl alcohol (PVA) modified with the 3-mercaptopropyl trimethoxysilane (MPTMS) and 3-aminopropyl trimethoxysilane (APTMS) dopants are reported. The topography of the particulate films is characterized by the field-emission scanning electron microscopy. The optical spectra broadening, red-shift, and the increase in the intensity values of the plasmonic resonance peak with the nature of dopant have a strong dependence on the particle size, shape, and inter-particle separation. The conducted experimental optical studies are supported by Finite Difference Time-Domain (FDTD) simulation results. Quantitative analysis of the Fourier-Transform Infrared Spectroscopy (FTIR) and Raman Spectroscopy studies confirm the surface modification of Ag nanoparticulate films on doped PVA substrates. The amount of polymer-metal interaction caused by the strongly interacting silane groups of the dopants and their influence on the morphology and optical properties are discussed.
Original languageEnglish
Pages (from-to)2719-2730
Number of pages12
JournalJournal of Materials Science: Materials in Electronics
Issue number3
Early online date21 Jan 2021
Publication statusPublished - Feb 2021

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