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Molecules 2012, 17(9), 10801-10815;

Photoelectrode Characteristics of Partially Hydrolyzed Aluminum Phthalocyanine Chloride/Fullerene C60 Composite Nanoparticles Working in a Water Phase

Chemical Resources Laboratory, Division of Integrated Molecular Engineering, Tokyo Institute of Technology, Yokohama 226-8503, Japan
Center for Low-Dimensional Materials, Micro-Nano Devices and System, Changzhou University, Changzhou 213164, Jiangsu, China
Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
Author to whom correspondence should be addressed.
Received: 25 July 2012 / Revised: 28 August 2012 / Accepted: 5 September 2012 / Published: 10 September 2012
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Photoelectrochemical measurements were used to study the photoelectrode characteristics of composite nanoparticles composed of fullerene C60 and partially hydrolyzed aluminum phthalocyanine chloride (AlPc). In cyclic voltammetry measurements, the electrodes coated with the composite nanoparticles were found to have photoanodic [electron donor: 2-mercaptoethanol (ME)] and photocathodic (electron acceptor: O2) characteristics similar to those of the vapor-deposited p/n junction electrode. Their photoanodic features were further investigated with respect to the transient photocurrent response to light irradiation and the dependence on ME concentration (under potentiostatic conditions), from which it was noted that there was a decrease in the initial spiky photocathodic current and saturation of the steady-state photoanodic current at a higher ME concentration. Thus, the reaction kinetics was probably dominated by charge transport process. Moreover, external and internal quantum efficiency spectrum measurements indicated that the composite nanoparticles responded to the full spectrum of visible light ( < 880 nm) for both the photoanodic and photocathodic current. The present research will assist comprehension of photocatalytic behavior of the composite nanoparticles. View Full-Text
Keywords: organophotocatalyst; fullerene; phthalocyanine; photoelectrochemistry organophotocatalyst; fullerene; phthalocyanine; photoelectrochemistry

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Zhang, S.; Abe, T.; Iyoda, T.; Nagai, K. Photoelectrode Characteristics of Partially Hydrolyzed Aluminum Phthalocyanine Chloride/Fullerene C60 Composite Nanoparticles Working in a Water Phase. Molecules 2012, 17, 10801-10815.

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