Article ID Journal Published Year Pages File Type
10638327 Materials Chemistry and Physics 2005 4 Pages PDF
Abstract
The degeneration of energy level of α, β, γ, δ-tetrahydroxylphenylporphyrin (THPP) and red shift of the photovoltage peaks of THPP are observed as the size of nano-TiO2 decreasing using surface photovoltage (SPV) technique, while that of α, β, γ, δ-tetraphenylporphyrin (TPP) have little change. The reason for that is the existence of hydroxyls of THPP, which interact with the surface of nano-TiO2. This difference was also demonstrated by IR spectrum.
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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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