论文部分内容阅读
带有负电荷取代基的四磺化酞菁化合物与 TiO2超微粒在溶液中通过静电相互吸引 ,能够形成基态复合物 .通过吸收光谱和荧光光谱 ,计算了磺化酞菁与 TiO2在溶液中的表观缔合平衡常数 K.与相应的烷氧基取代酞菁化合物作比较 ,并通过单光子计数技术测定染料荧光寿命 .结合荧光光谱 ,证明了磺化酞菁与 TiO2在溶液中的缔合作用 ,有利于激发态酞菁染料向半导体 TiO2的导带注入电子 ,从而发生分子间的电子转移反应 .将磺化酞菁吸附在 TiO2纳晶薄膜电极上 ,进行光电性能测试 .结果表明，染料敏化 TiO2纳晶薄膜电极光电响应的大小与染料在电极表面吸附的强弱有关 .
The tetrasulfonated phthalocyanine compound with negative charge substituent and TiO2 ultrafine particles attract each other by electrostatic attraction in the solution to form the ground state complex.The absorption spectra and fluorescence spectra of sulfonated phthalocyanine and TiO2 in solution were calculated The apparent equilibrium constant of association K. Compared with the corresponding alkoxy-substituted phthalocyanine compounds, the fluorescence lifetime of dye was measured by single-photon counting technique. Combining the fluorescence spectra, it was proved that the association of sulfonated phthalocyanine and TiO2 in solution Is conducive to the excited state of phthalocyanine into the conduction band of the semiconductor TiO2 electron injection, and thus the intermolecular electron transfer reaction occurs. The sulfonated phthalocyanine adsorption on the TiO2 nanocrystalline thin film electrode, the photoelectric properties of the test results show that the dye The photoelectrical response of the sensitized TiO 2 nanocrystalline thin film electrode is related to the adsorption of dye on the electrode surface.