Adsorption Studies of Counterions Carried by the Sensitizer cis-Dithiocyanato(2,2'-bipyridyl-4,4'-dicarboxylate) Ruthenium(II) on Nanocrystalline TiO2 Films
Adsorption Studies of Counterions Carried by the Sensitizer cis-Dithiocyanato(2,2'-bipyridyl-4,4'-dicarboxylate) Ruthenium(II) on Nanocrystalline TiO2 Films
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DOI：
10.1021/la000685g
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发表时间：
2000-10
期刊：
影响因子：
3.9
通讯作者：
Md. K. Nazeeruddin;M. Amirnasr;P. Comte;J. R. Mackay;A. McQuillan;A. Houriet;M. Grätzel
中科院分区：
文献类型：
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作者：
Md. K. Nazeeruddin;M. Amirnasr;P. Comte;J. R. Mackay;A. McQuillan;A. Houriet;M. Grätzel
钌（II）配合物（Bu 4 N）2[Ru（Hdcbpy）2（NCS）2]（1）、（Bu 4 N）4[Ru（dcbpy）2（NCS）2]（2）和[Ru（H2 dcbpy）2（NCS）2]（3）携带的抗衡离子的吸附研究（dcbpy = 2，2 '-bipyridine-4，4'-dicarboxylate，Bu 4 N = tetrabutylammonium）在TiO 2上的吸附行为已经通过使用热分析技术、NMR和ATR-FTIR光谱方法进行。热重分析（TGA）数据的吸附配合物1和2的TiO 2显示存在1和≤1.3阳离子共吸附每个钌中心，分别。这些络合物在TiO 2上的吸附状态在高达180 °C的高温下在空气气氛中显示出显着的稳定性。在较低温度下观察到的唯一过程是脱水，其发生在40至110 °C之间。在高温下，该过程是四丁基铵络合物的脱氨基以及络合物在200至400 °C之间的脱羧和分解。从TiO 2表面解吸的配合物1和2的NMR数据表明，1和2的存在。
Adsorption studies of counterions carried by the ruthenium(II) complexes (Bu4N)2[Ru(Hdcbpy)2(NCS)2] (1), (Bu4N)4[Ru(dcbpy)2(NCS)2] (2), and [Ru(H2dcbpy)2(NCS)2] (3) (dcbpy = 2,2‘-bipyridyl-4,4‘-dicarboxylate, Bu4N = tetrabutylammonium) on TiO2 have been carried out by using thermoanalytical techniques, NMR, and ATR−FTIR spectroscopic methods. The thermogravimetric analysis (TGA) data of the adsorbed complexes 1 and 2 on TiO2 show the presence of 1 and ≤1.3 cations coadsorbed per ruthenium center, respectively. These complexes in the adsorbed state on TiO2 show remarkable stability in air atmospheres at high temperatures up to 180 °C. The only process that is observed at lower temperatures is the dehydration, which occurs between 40 and 110 °C. At high temperature the processes are deamination of the tetrabutylammonium counterion as well as decarboxylation and decomposition of the complex between 200 and 400 °C. The NMR data of the desorbed complexes 1 and 2 from the TiO2 surface show the presence of 1 and...