Supramolecular Donor−Acceptor Hybrid of Electropolymerized Zinc Porphyrin with Axially Coordinated Fullerene: Formation, Characterization, and Photoelectrochemical Properties
| Autor: | Francis D'Souza, Navaneetha K. Subbaiyan, Kim Tran, Wlodzimierz Kutner, Ievgen Obraztsov, Channa A. Wijesinghe |
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| Rok vydání: | 2009 |
| Předmět: |
Photocurrent
Materials science Fullerene Supramolecular chemistry 02 engineering and technology Quartz crystal microbalance 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Electrochemistry Triphenylamine 01 natural sciences Porphyrin 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy Monomer chemistry Physical and Theoretical Chemistry 0210 nano-technology |
| Zdroj: | The Journal of Physical Chemistry C. 113:8982-8989 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp900507s |
| Popis: | Photoelectrochemical behavior of self-assembled C60 via axial coordination to an electrochemically polymerized zinc porphyrin film was systematically investigated to unravel the importance of the coordinated fullerene in improving the photocurrent and photovoltage generation of the resulting donor−acceptor dyad. For this, tetrakis(4-(N,N-diphenylamino)-phenyl)porphyrinato-zinc(II), (Ph2N)4ZnP, bearing electropolymerizable triphenylamine peripheral substituents was first electropolymerized to form a film on the electrode surface. The resulting formation of the electrochemically active and dense film was confirmed by using an electrochemical quartz crystal microbalance (EQCM) and by atomic force microscopy imaging. The optical absorption and emission studies revealed the characteristic absorption and emission bands of zinc porphyrin that suggested preservation of the π-electron system of the porphyrin monomer in the polymer. Further, the fullerene, derivatized with an axially coordinating imidazole ligand, ... |
| Databáze: | OpenAIRE |
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