Fabrication and Photochemical Characterization of Organic Dye-Metal Oxide Hybrid Langmuir Blodgett Film

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  • Usami Hisano
    Division of Chemistry and Materials, Faculty of Textile Science and Technology,Shinshu University
  • Sasaki Satoshi
    Division of Chemistry and Materials, Faculty of Textile Science and Technology,Shinshu University

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Langmuir-Blodgett (LB) film of tetra-t-butyl-Zn-phthalocyanine (Pc), dicitratodiperoxotitanate complex (TAS) and ditetradecylviologen (V) triad was fabricated on thin glass waveguide as a cascade electron transfer model. The arrangement of the layer as Pc-TAS-V was successfully controlled by LB process. Monolayer of Pc or V was stabilized with TAS layer due to a multiple electrostatic interaction at air-water interface. Photoinduced electron transfer from the Pc to V through the TAS layer in Pc-TAS-V triad system was measured directly using waveguide spectroscopy. Electron transfer in the opposite layering sequence, V-TAS-Pc, was negligible. According to these results, direction of the electron transfer can be controlled in the triad by controlling the layering sequence using the hybrid LB procedure.

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