Hydrogen bonding effects on the surface structure and photoelectrochemical properties of nanostructured SnO2 electrodes modified with porphyrin and fullerene composites.
Hydrogen bonding effects on surface structure, photophysical properties, and photoelectrochemistry have been examined in a mixed film of porphyrin and fullerene composites with and without hydrogen bonding on indium tin oxide and nanostructured SnO2 electrodes. The nanostructured SnO2 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 surface structure and photophysical 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 highly promising methodology for the fabrication of donor and acceptor composites on nanostructured semiconducting electrodes, which exhibit high photoelectrochemical properties.
Imahori
Hiroshi
H
Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan. imahori@scl.kyoto-u.ac.jp
Liu
Jia-Cheng
JC
Hotta
Hiroki
H
Kira
Aiko
A
Umeyama
Tomokazu
T
Matano
Yoshihiro
Y
Li
Guifeng
G
Ye
Shen
S
Isosomppi
Marja
M
Tkachenko
Nikolai V
NV
Lemmetyinen
Helge
H
D004563:Electrochemistry; D004566:Electrodes; D037741:Fullerenes / Q000737:chemistry*; D006860:Hydrogen Bonding; D009682:Magnetic Resonance Spectroscopy; D018625:Microscopy, Atomic Force; D036103:Nanotechnology; D011166:Porphyrins / Q000737:chemistry*; D013499:Surface Properties; D017971:Tin Compounds / Q000737:chemistry*
D037741:Fullerenes; D011166:Porphyrins; D017971:Tin Compounds; C045358:stannic oxide