Electrochemical properties of thin-layered composites formed by carbon nanotubes and polybithiophene

Abstract

Redox behavior of thin films of polybithiophene deposited on substrates of conducting glass and single-or multi-walled carbon nanotubes is studied at positive potentials in a 0.1 M (C 4 H 9 ) 4 NBF 4 solution in acetonitrile. The polymer's formal doping-undoping potentials are nearly the same for all substrates, which points to the absence of any marked donor-acceptor interaction between nanotubes and polybithiophene. Some polybithiophene electrochemical characteristics (reversibility, doping degree) are improved when deposited onto nanotubes, probably due to the developed surface of the electrode based on carbon nanotubes.

Synthesis and Characterizations of Poly(3‐hexylthiophene) and Modified Carbon Nanotube Composites

“…The UV-Vis absorption spectra of P3HT and P3HT/ MWNT composites in 1,2,4-trichlorobenzene are presented in Figure 7. It is known that MWNT absorption makes no significant contributions to the spectra [39]. The value of λ max of P3HT (456 nm) is in line with an already reported value in the literature [40,41].…”

Synthesis and characterization of poly(3‐octylthiophene)/single wall carbon nanotube composites for photovoltaic applications

“…The UV–Vis absorption spectra of P3OT and P3OT/SWCNT composites in 1,2,4‐trichlorobenzene are presented in Figure 7. It is known that SWCNT absorption makes no significant contributions to the spectra 45. The value of λ max of P3OT (435 nm) is in line with an already reported value in the literature 46.…”

Electrochemical properties of composites containing small carbon nano-onions and solid polyelectrolytes

“…In particular, composites of CNTs and polymers have been extensively studied. [25][26][27][28][29][30][31][32][33][34][35][36][37][38] These composites create a polymeric-nanostructured matrix with cooperative behavior between the host and guest (CNTs) that modifies the electronic properties of both components. Such materials offer a great potential for electrotechnology and in particular for the production of porous electrodes as electrochemical supercapacitors.…”

“…Such materials offer a great potential for electrotechnology and in particular for the production of porous electrodes as electrochemical supercapacitors. Composites of CNTs and electrochemically active p-conjugated conducting polymers, such as polypyrrole, 25-28 polyaniline [29][30][31] or polythiophene, 25,32,33 are usually used as redox capacitors. In those cases, polymer oxidation resulted in charge accumulation in the composite.…”