Ruthenium Dyes with Azo Ligands: Light Harvesting, Excited-State Properties and Relevance to Dye-Sensitised Solar Cells
Ruthenium Dyes with Azo Ligands: Light Harvesting, Excited-State Properties and Relevance to Dye-Sensitised Solar Cells
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具有偶氮配体的钌染料:光捕获、激发态特性以及与染料敏化太阳能电池的相关性
DOI:
10.1002/ejic.201501071
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发表时间:
2015
影响因子:
2.3
通讯作者:
Hu Y
中科院分区:
文献类型:
--
作者:
Hu Y
A series of new RuIIcomplexes has been synthesised, with different azo ligands as additional chromophore. The dyes are all intensely colored due to MLCT and ILCT transitions in the visible region. The photophysical study of the dyes, carried out by UV/Vis absorption and emission spectroscopy, showed unusual features such as intense solvatochromism and solvent‐dependent extinction coefficients. The energies of these excited states have been tuned by changing the electron density across the series of azo ligands, and this results in different contributions from each charge transfer process for the different complexes and consequently, different emission behavior. The detailed behaviour of these dyes was further studied and interpreted through electrochemical, structural and computational techniques. The dyes do not work well as sensitisers for DSSCs and this is investigated by emission spectroscopy on TiO2and ZrO2films, suggesting poor charge injection to TiO2.
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2012
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Physical Chemistry, Chemical Physics - PCCP
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