Spectroscopic and Structural Studies of Cyanine Dyes in Functionalized Langmuir–Blodgett Films: Electron and Energy Transfer Processes
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概要
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Formation of the $J$-aggregates with redshifted bands and the H-aggregates with blue-shifted bands for a long-chain merocyanine (MC) could be controlled by mixing the molecular matrix components in the monolayer assembly. The binary Langmuir–Blodgett (LB) film containing MC and Cd arachidate (AA) provided the $J$-aggregates which have a sharp fluorescence with less Stokes shift. The ternary LB system having MC–AA and octadecane (OD) showed the H-aggregates in addition to the $J$-aggregates. The structures of the $J$- and H-aggregates were studied by atomic force microscopy and X-ray diffraction analysis. Additionally, the photo-induced electron transfer from the MC $J$-aggregate donor to a long-chain bipyridilium and the energy transfer from another cyanine dye donor to the MC H-aggregate acceptor were investigated in the hetero-LB films by varying the separation between the donor and acceptor layers.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2001-08-15
著者
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Nakahara Hiroo
Department Of Chemistry Faculty Of Science Saitama University
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Ray Krishanu
Department Of Chemistry Faculty Of Science Saitama University
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Ray Krishanu
Department of Chemistry, Faculty of Science, Saitama University, Shimo-okubo 255, Saitama 338-8570, Japan
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