Abstrakti
Donor−acceptor composite layers made of the electrically conducting polymers p-type polyazulene (PAz) and n-type polybenzimidazobenzophenanthroline-poly(ethyleneoxide) (BBL-PEO) were studied. The water dispersible BBLPEO was solution-cast on PAz electropolymerized on Pt or ITO glass electrodes or on the bare electrode surfaces. The doping behavior within both the n- and p-doping potential regions was studied by cyclic voltammetry and in situ spectroelectrochemical techniques: UV−visible and FTIR-ATR spectroscopy. All of the results showed contributions from both polymers in the composites, besides the spectral behaviors in the n-doping potential region were mainly controlled by BBL-PEO and in the p-doping region by PAz. Rather stable donor composites with the formation of charge carriers in both n- and p-doping regions were formed. In the BBL-PEO/PAz composite PAz was found to have a higher promoting effect on the formation of charge carriers than in the PAz/BBL-PEO composite. The composites stayed conducting within a broad negative potential region while some charges appeared to be trapped in the layers after the negative potential scan.
Alkuperäiskieli | Ei tiedossa |
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Sivut | 23793–23802 |
Julkaisu | Journal of Physical Chemistry C |
Vuosikerta | 116 |
Numero | 44 |
DOI - pysyväislinkit | |
Tila | Julkaistu - 2012 |
OKM-julkaisutyyppi | A1 Julkaistu artikkeli, soviteltu |
Keywords
- polyazulene
- BBL-PEO
- spectroelectrochemistry
- donor-acceptor
- composite