<紀要論文>
機能制御のデザイン : 単分子累積膜系の光機能とクロモフォアの配列制御

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概要 Monolayer assemblies containing redox chromophores were prepared to investigate photon-photon and photoelectric conversion in highly ordered systems. Highly amplified fluorescence quenching and effici...ent energy transfer depending on the molar fraction were clarified in monolayer assemblies containing carbazolyl chromophores. The second harmonic generation from alternate monolayer assemblies containing Ru (II)-complex was controlled photochemically by the second laser pulse. Transient photocurrents in monolayer assemblies containing amphipathic porphyrin as a photoreaction center and redox chromophores as a charge transporting system were measured upon the excitation with a pulsed dye laser together with steady photocurrents. Both transient and steady photoelectric properties of monolayer assemblies were controlled by the ordered redox chromophores. Ion-pair charge-transfer (CT) complexes of 4,4'-bipyridinium with tetrakis [3,5'-bis (trifluoromethyl) phenyl] borate anion were formed. The excitation of a CT band in monolayer assemblies under an inert atmosphere resulted in the persistent and reversible photoreduction of 4,4'-bipyridinium ion. The molecular orientation of 4,4'-bipyridinium cation radicals was controlled by the substituents. The promising applicability of ordered organic thin films to the molecular systems for optical conversion and storage was demonstrated.続きを見る

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登録日 2009.04.22
更新日 2017.03.28