Citation: Han A-Li, Du Ping-Wu. Platinum-Cobalt Dinuclear Complex：Synthesis, Photophysical Properties and Visible Light-Driven Hydrogen Production from Water[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(8): 1703-1709. doi: 10.3969/j.issn.1001-4861.2013.00.309 shu

Platinum-Cobalt Dinuclear Complex：Synthesis, Photophysical Properties and Visible Light-Driven Hydrogen Production from Water

Han A-Li ,
Du Ping-Wu

1.
Key Laboratory of Materials for Energy Conversion of Chinese Academy of Sciences & Department of Materials Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026 China

Received Date: 28 February 2013
Available Online: 14 June 2013
Fund Project: 国家自然科学基金(No.21271166)资助项目。 (No.21271166)

A platinum sensitizer-cobalt dinuclear complex, [Pt(^tBu₃tpy)([C≡C-C₆H₄N])-Co(dmgH)₂PyCl, 5] (^tBu₃tpy=4,4',4"-tri(tert-butyl)-2,2':6',2"-terpyridine, C₆H₄N=4-pyridyl, dmgH=dimethylglyoxime, Py=pyridine), has been synthesized and characterized. The complex 5 shows absorption spectra in the visible region, which are assigned to mainly metal-to-ligand charge transfer (MLCT) character from the platinum sensitizer part. The cobalt moiety in complex 5 could quench the luminescence of the platinum part, indicating a possible process of intramolecular electron transfer. This dinuclear complex has been used for light-driven catalytic hydrogen production from water in the presence of triethanolamine (TEOA). The hydrogen production is affected by many factors, such as pH value and solvent. And the results show that this molecular catalyst could be decomposed to release the platinum based photosensitizer, as confirmed by absorption spectra and mass spectrometry.
- platinum;photosensitizer;cobalt;hydrogen production
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