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Synthesis and Characterization of Polyaniline doped with Ionic Liquid  

Hong, Jang-Hoo (Department of Fine Chemistry, Seoul National University of Technology)
Jo, Gyu Seong (Department of Fine Chemistry, Seoul National University of Technology)
Publication Information
Applied Chemistry for Engineering / v.21, no.1, 2010 , pp. 93-97 More about this Journal
Abstract
Polyaniline doped with ionic liquid (1,3-dimethylimidazolium methylsulfate, I-DMS) soluble in polar solvents (NMP, DMSO, DMF, m-cresol etc.) were synthesized by nucleophilic addition. Solubilities of PAN/I-DMS powder in polar solvents were observed in the range of 3~6 wt%/vol., respectively. The electrical conductivities of PAN/I-DMS films appeared in the range of $10^{-2}{\sim}7S/cm$. Polyaniline doped with I-DMS (PAN/I-DMS) showed improved thermal stability and conductivity compared to that of HCl doped polyaniline (PAN/HCl) and dimethylsulfate (DMS) doped polyaniline (PAN/DMS) upon heat treatment at $160^{\circ}C$. These improved conductivity and solubility in organic polar solvents was explained with the interactions between the polar sulfonate group and polar solvents.
Keywords
polyaniline; ionic liquid; nucleophilic addition; conductivity;
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