Poly(2,6-di(thiophene-2-yl)-3,5bis(4-(thiophene-2-yl)phenyl)dithieno [3,2-b;2',3'-d]thiophene)/carbon nanotube composite for capacitor applications
Article first published online: 16 NOV 2013
Copyright © 2013 Wiley Periodicals, Inc.
Journal of Applied Polymer Science
Volume 131, Issue 9, May 5, 2014
How to Cite
2014). Poly(2,6-di(thiophene-2-yl)-3,5bis(4-(thiophene-2-yl)phenyl)dithieno [3,2-b;2',3'-d]thiophene)/carbon nanotube composite for capacitor applications. J. Appl. Polym. Sci. 131, 40061, doi: 10.1002/app.40061, , , and (
- Issue published online: 1 FEB 2014
- Article first published online: 16 NOV 2013
- Manuscript Accepted: 14 OCT 2013
- Manuscript Received: 5 AUG 2013
- synthesis and processing;
- graphene and fullerenes;
- functionalization of polymers;
- conducting polymers;
A novel monomer, 2,6-di(thiophene-2-yl)-3,5bis(4-(thiophene-2-yl)phenyl)dithieno[3,2-b;2',3'-d]thiophene (Th4DTT) has been synthesized and used as an electro-active material. It has been electropolymerized onto glassy carbon (GC) electrode in sodium dodecyl sulfate (SDS) solution (0.1 M) together with multi-walled carbon nanotubes (MWCNT). A good capacitive characteristics for P(Th4DTT)/MWCNT composite has been obtained by electrochemical impedance spectroscopy (EIS), which is, to our best knowledge, the first report on capacitor behavior of a dithienothiophene. A synergistic effect has been resolved by Nyquist, Bode-magnitude—phase and admittance plots. Specific capacitance of the conducting polymer/MWCNT, calculated from cyclic voltammogram (CV) together with area and charge formulas, has been found to be 20.17 F g−1. Long-term stability of the capacitor has also been tested by CV, and the results indicated that, after 500 cycles, the specific capacitance is 87.37% of the initial capacitance. An equivalent circuit model of Rs(C1(R1(Q(R2W))))(C2R3) has been obtained to fit the experimental and theoretical data. The double layer capacitance (Cdl) value of P(Th4DTT)/MWCNT (4.43 mF cm−2) has been found to be 25 times higher than P(Th4DTT) (Cdl= 0.18 mF cm−2). © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40061.