An artificial photosynthetic system for photoaccumulation of two electrons on a fused dipyridophenazine (dppz)-pyridoquinolinone ligand

作者：Lefebvre Jean Francois; Schindler Julian; Traber Philipp; Zhang Ying; Kupfer Stephan; Graefe Stefanie; Baussanne Isabelle; Demeunynck Martine; Mouesca Jean Marie; Gambarelli Serge; Artero Vincent; Dietzek Benjamin; Chavarot Kerlidou Murielle

来源：Chemical Science, 2018, 9(17): 4152-4159.

DOI：10.1039/c7sc04348a

Increasing the efficiency of molecular artificial photosynthetic systems is mandatory for the construction of functional devices for solar fuel production. Decoupling the Eight-induced charge separation steps from the catalytic process is a promising strategy, which can be achieved thanks to the introduction of suitable electron relay units performing charge accumulation. We report here on a novel ruthenium tris-diimine complex able to temporarily store two electrons on a fused dipyridophenazine-pyridoquinolinone pi-extended ligand upon visible-light irradiation in the presence of a sacrificial electron donor. Full characterization of this compound and of its singly and doubly reduced derivatives thanks to resonance Raman, EPR and (TD)DFT studies allowed us to localize the two electron-storage sites and to relate charge photoaccumulation with proton-coupled electron transfer processes.

• 出版日期2018-5-7
• 单位中国地震局