1421057-65-9Relevant academic research and scientific papers
Photocatalytic water reduction with copper-based photosensitizers: A noble-metal-free system
Luo, Shu-Ping,Esteban Mejia,Friedrich, Aleksej,Pazidis, Alexandra,Junge, Henrik,Surkus, Annette-Enrica,Jackstell, Ralf,Denurra, Stefania,Gladiali, Serafino,Lochbrunner, Stefan,Beller, Matthias
supporting information, p. 419 - 423 (2013/02/25)
Of noble descent: A fully noble-metal-free system for the photocatalytic reduction of water at room temperature has been developed. This system consists of CuI complexes as photosensitizers and [Fe3(CO) 12] as the water-reduction catalyst. The novel Cu-based photosensitizers are relatively inexpensive, readily available from commercial sources, and stable to ambient conditions, thus making them an attractive alternative to the widely used noble-metal based systems.
A noble-metal-free system for photocatalytic hydrogen production from water
Mejia, Esteban,Luo, Shu-Ping,Karnahl, Michael,Friedrich, Aleksej,Tschierlei, Stefanie,Surkus, Annette-Enrica,Junge, Henrik,Gladiali, Serafino,Lochbrunner, Stefan,Beller, Matthias
supporting information, p. 15972 - 15978 (2014/04/03)
A series of heteroleptic copper(I) complexes with bidentate PP and NN chelate ligands was prepared and successfully applied as photosensitizers in the light-driven production of hydrogen, by using [Fe3(CO)12] as a water-reduction catalyst (WRC). These systems efficiently reduces protons from water/THF/triethylamine mixtures, in which the amine serves as a sacrificial electron donor (SR). Turnover numbers (for H) up to 1330 were obtained with these fully noble-metal-free systems. The new complexes were electrochemically and photophysically characterized. They exhibited a correlation between the lifetimes of the MLCT excited state and their efficiency as photosensitizers in proton-reduction systems. Within these experiments, considerably long excited-state lifetimes of up to 54μs were observed. Quenching studies with the SR, in the presence and absence of the WRC, showed that intramolecular deactivation was more efficient in the former case, thus suggesting the predominance of an oxidative quenching pathway.
