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dc.contributor.authorAkira Babaen_US
dc.contributor.authorTaihei Matsuzawaen_US
dc.contributor.authorSaengrawee Sriwichaien_US
dc.contributor.authorYasuo Ohdairaen_US
dc.contributor.authorKazunari Shinboen_US
dc.contributor.authorKeizo Katoen_US
dc.contributor.authorSukon Phanichphanten_US
dc.contributor.authorFutao Kanekoen_US
dc.description.abstractIn this paper, we demonstrate photocurrent generation from nanostructured layer-by-layer (LbL) ultrathin films consisting of chromophores and single-walled carbon nanotubes (SWNT). We fabricated 5,10,15,20-tetrakis(1- methyl-4-pyridinio)porphyrin tetr (p-toluenesulfonate) (TMPyP)-SWNT/sodium copper chlorophyllin (SCC)-SWNT LbL film from noncovalently adsorbed composites. SWNT were dissolved in water-soluble cationic TMPyP and anionic SCC, and the resulting solutions were used for electrostatic LbL multilayer fabrication. The solubility of SWNT in water was studied by UV-vis absorption spectroscopy. The composites were highly dispersed owing to the π-π interactions. The fluorescence spectroscopy measurements showed efficient quenching of TMPyP and SCC fluorescence, which was due to the interaction with SWNT. In situ surface plasmon resonance spectroscopy during the LbL multilayer fabrication indicated a stepwise increase in reflectivity, implying the successive formation of nanostructured hybrid ultrathin films. Cyclic voltammetry revealed that the electroactivity of the hybrid film was enhanced by the incorporation of SWNT. The composite LbL film electrode exhibited an enhancement of photocurrent compared to a TMPyP/SCC (no SWNT) film electrode, suggesting efficient charge separation and electron transfer in the system. © 2010 American Chemical Society.en_US
dc.subjectMaterials Scienceen_US
dc.titleEnhanced photocurrent generation in nanostructured chromophore/carbon nanotube hybrid layer-by-layer multilayersen_US
article.title.sourcetitleJournal of Physical Chemistry Cen_US
article.volume114en_US Universityen_US Mai Universityen_US
Appears in Collections:CMUL: Journal Articles

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