Synthesis of water soluble polypyrrole as a highly selective fluorescent probe for vanadyl sensing
Paper ID : 1227-ICNS
naader alizadeh motlagh *, taraneh Gajinehbaf, razieh moosavi
Departmentof Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, Tehran, Iran
This article focuses on synthesis of water soluble polypyrrole (PPy) and its sensing application as a potent photoluminescence probe. Because of aggregation phenomena and limited solubility of polymers in most common organic and aqueous solvents, advancement in molecular design and synthetic pathways is required to tune the optical and solubility properties of the resulting conjugated polymer nanoparticle products. Herein, a simple and low cost process for the synthesis of water-soluble PPy is reported based on the chemical polymerization in the presence of citric acid as multifunctional dopant molecules, possessing tricarboxylic acid groups which serve as both dopants and stabilizing agents. Citric acid-stabilized polymer (PPy-Cit) was showed the high emission spectra (╬╗em = 460 nm) that quenched selectively in the presence of Vanadyl (VO2+) and Fe3+ ions. The superior properties of the synthesized water-soluble PPy-Cit provide general, facile and effective approach in preparation of prominent polymer as an applicable selective sensor for the monitoring of VO2+ and Fe3+ ions in the presence of each other.
Water soluble polypyrrole, Citric acid, Vanadyl, Fluorescence sensor.
Status : Abstract Accepted (Poster Presentation)