Enhanced performance of terpolymer resin derived from resorcinol/formaldehyde/salicylic acid for antibacterial applicati
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RESEARCH
Enhanced performance of terpolymer resin derived from resorcinol/ formaldehyde/salicylic acid for antibacterial application Abdulrahman Mohammad1 · Abdul Kareem1 · Azar Ullah Mirza1 · Shahnawaz Ahmad Bhat1 · Shahab A. A. Nami2 · Sumbul Rehman3 · Nahid Nishat1 Received: 12 March 2019 / Accepted: 10 September 2020 © Islamic Azad University 2020
Abstract A terpolymer resin derived from Resorcinol, Formaldehyde and Salicylic acid was synthesized through condensation reaction. Transition metal ions namely Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) were incorporated into the resin forming polymer-metal complexes. Both the resin and the complexes were characterized by FTIR, UV–Vis., XRD, 1H NMR, TGA and SEM/EDX. Elemental analysis was carried out to determine the percentage of different elements present in the resin and its complexes. Conductivity measurement data showed higher conductivity of the metal complexes as compared to its precursor resin. The terpolymer resin and its metal complexes were tested against five strains of gram positive bacteria namely; S. aureus, S. mutans, S. pyrogenes, C. xerosis, C. diphtheria, and three strains of gram negative bacteria namely; E. coli, K. pneuomoniae and P. aeruginosa. All the metal complexes exhibited enhanced antibacterial properties as compared to its terpolymer resin. The Mn(II) and Co(II) demonstrated strong antibacterial activity. Graphic Abstract
Keywords Terpolymer resin · Metal complex · Antibacterial activity * Nahid Nishat [email protected] 1
Materials Research Lab, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
2
Department of Kulliyat, Faculty of Unani Medicine, Aligarh Muslim University, Aligarh 202002, India
3
Department of Ilmul Advia, Faculty of Unani Medicine, Aligarh Muslim University, Aligarh 202002, India
Introduction A large amount work has been carried out on the customized synthesis, characterization and applications of various inorganic and organic polymers. Particularly, research in the area of coordination polymers has witnessed an upsurge during the past few decades. The discovery of the Prussian blue in 1704 has marked the beginning of first man made
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International Journal of Industrial Chemistry
coordination polymer [1]. Coordination polymers comprises of addition of metal ions into the polymeric backbone leading to the formation of the polymer-metal complex with enhanced chemical, mechanical and optical properties which have myriads of applications [2–6]. A terpolymer resin generally consist of three distinct monomers bonded in an end-to-end fashion and have applications in the area of porous and hybrid films [7], solar cells [8], ferroelectric and electromechanical devices [9], in biological and medical fields [10]. Notably, Ahamed and co-workers have synthesized the terpolymer resin of Anthranilic acid, Salicylic acid and Formaldehyde and studied their metal ion binding capacities and thermal degradation properties [11]. Similarly, Bhatt and co-workers have re
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