TY - JOUR
T1 - Hydrogen-bonding effects on film structure and photoelectrochemical properties of porphyrin and fullerene composites on nanostructured TiO 2 electrodes
AU - Kira, Aiko
AU - Tanaka, Masanobu
AU - Umeyama, Tomokazu
AU - Matano, Yoshihiro
AU - Yoshimoto, Naoki
AU - Zhang, Yi
AU - Ye, Shen
AU - Lehtivuori, Heli
AU - Tkachenko, Nikolai V.
AU - Lemmetyinen, Helge
AU - Imahori, Hiroshi
PY - 2007/9/13
Y1 - 2007/9/13
N2 - Hydrogen-bonding effects on film structures and photophysical, photoelectrochemical, and photovoltaic properties have been examined in mixed films of porphyrin and fullerene composites with and without hydrogen bonding on nanostructured TiO2 electrodes. The nanostructured TiO2 electrodes modified with the mixed films of porphyrin and fullerene composites with hydrogen bonding exhibited efficient photocurrent generation compared to the reference systems without hydrogen bonding. Atomic force microscopy, infrared reflection absorption and ultraviolet-visible absorption spectroscopies, and time-resolved fluorescence lifetime and transient absorption spectroscopic measurements disclosed the relationship between the film structures and optical and photoelectrochemical properties relating to the formation of hydrogen bonding between the porphyrins and/or the C60 moieties in the films on the electrode surface. These results show that hydrogen bonding is a potential methodology for the fabrication of donor and acceptor composites on a nanostructured TiO2 electrode, which exhibits high open circuit potential relative to that of the corresponding SnO2 electrode.
AB - Hydrogen-bonding effects on film structures and photophysical, photoelectrochemical, and photovoltaic properties have been examined in mixed films of porphyrin and fullerene composites with and without hydrogen bonding on nanostructured TiO2 electrodes. The nanostructured TiO2 electrodes modified with the mixed films of porphyrin and fullerene composites with hydrogen bonding exhibited efficient photocurrent generation compared to the reference systems without hydrogen bonding. Atomic force microscopy, infrared reflection absorption and ultraviolet-visible absorption spectroscopies, and time-resolved fluorescence lifetime and transient absorption spectroscopic measurements disclosed the relationship between the film structures and optical and photoelectrochemical properties relating to the formation of hydrogen bonding between the porphyrins and/or the C60 moieties in the films on the electrode surface. These results show that hydrogen bonding is a potential methodology for the fabrication of donor and acceptor composites on a nanostructured TiO2 electrode, which exhibits high open circuit potential relative to that of the corresponding SnO2 electrode.
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U2 - 10.1021/jp0726079
DO - 10.1021/jp0726079
M3 - Article
AN - SCOPUS:34748850771
SN - 1932-7447
VL - 111
SP - 13618
EP - 13626
JO - The Journal of Physical Chemistry C
JF - The Journal of Physical Chemistry C
IS - 36
ER -