Synthesis & characterization of tri arm Indole based ATRP Polymer and antibacterial study with its silver nanocomposite

Abstract

Hyperbranched poly (tris (1-allyl-1H-indol-3-yl) methane -co- 2-propionyloxy ethyl acrylate [Poly (TAIM-co-PEA)] was prepared by self-condensing vinyl copolymerization (SCVCP) of tris (1-allyl-1H-indol-3-yl) methane (TAIM) with 2-(2-bromopropionyloxy) ethyl acrylate (BPEA) via ATRP using the equimolar amount of TAIM and BPEA. In this hyperbranched polymer matrix, silver nanoparticles [Poly (TAIM-co-PEA)]N were prepared using a reductive method. The resultant polymer [Poly (TAIM-co-PEA)] and its silver nanocomposite [Poly (TAIM-co-PEA)]N were characterized by FTIR, 1H NMR, GPC, UV-visible, and TEM. The synthesized polymer has a nanopore size distribution centred at approximately 1.76 nm. Thermal stability of hyperbranched polymer [Poly (TAIM-co-PEA)] and its silver nanocomposite [Poly (TAIM-co-PEA)]N was studied by TGA/DTA and DSC. Antibacterial activity of porous polymer [Poly (TAIM-co-PEA)] and its silver nanocomposite [Poly (TAIM-co-PEA)]N was active against E. fecalis, E. coli, and K. pneumonae bacteria. © 2022, The Polymer Society, Taipei.