Polythiophene with ionophore substituent in the side chain

Abstract

The article presents the method of the synthesis of sulfonated polythiophene derivative (PTMBSA) in aqueous medium by means of emulsion polymerization. The method applies potassium peroxydisulfate as initiator and sodium dodecyl sulfate as the surfactant. The structure and physicochemical properties have been analyzed. Resulting polymers were characterized via Fourier transform infrared spectroscopy, X‐ray diffraction (XRD), thermogravimetric analysis, UV‐VIS, and electrochemical methods (e.g., cyclic voltammetric, current‐voltage characteristics, doping processes). Resulting polymer revealed mixed electronic and ionic conductivity having solid state maximum conductivity σ = 5.061 μS m−1. It is four orders of magnitude higher than this of pristine polythiophene obtained by similar way. Presented results show that tested polymers are interesting and seem to be promising material for organic electronic applications. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44372.

Conducting polymer: silver interface, morphology and properties

“…Measured at temperature 298, 308, 318K for the heterojunctions Ag/polymer shown in Fig. 10a reflect linear relationship of i-v The relationship has a similar shape as the dependence obtained for the pellets of the polymer with the gold electrodes (Au/polymer) [24]. The i-v characteristics measured for the heterojunction formed by nano-Ag in the same conditions shows nonlinear plots (Fig.…”

“…The synthesis of conducting polymer is a multistage process which was studied and optimized in our lab which was described in separate article [38]. In the first stage 3-thiophenemethanol (22 mmol) was dissolved in 100 ml of dimethylformamide at 283K then, sodium hydride (30 mmol) was added.…”

“…It was found that the introduction of alkyl side chain of specific length results in the increase of solubility and processability of polythiophene [19]. On the other hand derivatives containing ionophore group such as carboxyl, sulphonic or tertiary ammine groups, can make the polymer water soluble [24]. In addition another mechanism of charge carriers can be expected in such materials, consist of free ion migration.…”