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Synthesis of a New Cationic Polythiophene Derivative and Its Application for Colorimetric and Fluorometric Detection of Iodide Ion and Anionic Surfactants in Water
Author(s) -
Li Enyong,
Lin Li,
Wang Lin,
Pei Meishan,
Xu Jingkun,
Zhang Guangyou
Publication year - 2012
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201200100
Subject(s) - cationic polymerization , iodide , chemistry , polythiophene , polymer chemistry , derivative (finance) , ion , organic chemistry , polymer , conductive polymer , financial economics , economics
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 and fluorometric probe for the detection of iodide ion and anionic surfactants with high selectivity and sensitivity. Upon adding iodide ion or anionic surfactant into the aqueous solution of PDPMT‐Cl, the maximum absorption of the polymer is blue‐shifted with a naked‐eye color change from red‐violet to yellow, signifying that iodide ion or anionic surfactants can cause the dissociation of PDPMT‐Cl aggregates. More sensitive results are obtained in the fluorometric detection to iodide ion or anionic surfactant, thereinto, the detection limit to surfactants can be extended to the order of 10 −9 M .