Synthesis of a New Cationic Polythiophene Derivative and Its Application for Colorimetric and Fluorometric Detection of Iodide Ion and Anionic Surfactants in Water

• DOI: 10.1002/macp.201200100
• Publication Date: 2012-04-13T08:44:12Z
• Authors: Enyong Li; Li Lin; Lin Wang; Meishan Pei; Jingkun Xu; Guangyou Zhang
• Keywords: Cationic polymerization; Polythiophene; Derivative (finance)

Abstract A new cationic polythiophene derivative poly[3‐(1,1′‐dimethyl‐4‐piperidinemethylene)thiophene‐2,5‐diyl chloride] (PDPMT‐Cl) is synthesized and applied as a colorimetric fluorometric probe for the detection of iodide ion anionic surfactants with high selectivity sensitivity. Upon adding or surfactant into aqueous solution PDPMT‐Cl, maximum absorption polymer blue‐shifted naked‐eye color change from red‐violet to yellow, signifying that can cause dissociation PDPMT‐Cl aggregates. More sensitive results are obtained in surfactant, thereinto, limit be extended order 10 −9 M .