607374-41-4Relevant academic research and scientific papers
Model of the iron hydrogenase active site covalently linked to a ruthenium photosensitizer: Synthesis and photophysical properties
Ott, Sascha,Borgstroem, Magnus,Kritikos, Mikael,Lomoth, Reiner,Bergquist, Jonas,Akermark, Bjoern,Hammarstroem, Leif,Sun, Licheng
, p. 4683 - 4692 (2004)
A model of the iron hydrogenase active site with the structure [μ-ADT)Fe2(CO)6] (ADT = azadithiolate (S-CH 2-NR-CH2-S), (2: R = 4-bromophenyl, 3: R = 4-iodophenyl)) has been assembled and covalently linked to a [Ru(terpy)2] 2+ photosensitizer. This trinuclear complex 1 represents one synthetic step toward the realization of our concept of light-driven proton reduction. A rigid phenylacetylene tether has been incorporated as the linking unit in 1 in order to prolong the lifetime of the otherwise short-lived [Ru(terpy)2]2+ excited state. The success of this strategy is demonstrated by comparison of the photophysical properties of 1 and of two related ruthenium complexes bearing acetylenic terpyridine ligands, with those of [Ru(terpy)2]2+. IR and electrochemical studies reveal that the nitrogen heteroatom of the ADT bridge has a marked influence on the electronic properties of the [Fe2(CO)6] core. Using the Rehm-Weller equation, the driving force for an electron transfer from the photoexcited *[Ru(terpy)2]2+ to the diiron site in 1 was calculated to be uphill by 0.59 eV. During the construction of the trinuclear complex 1, n-propylamine has been identified as a decarbonylation agent on the [(μ-ADT)Fe2(CO)6] portion of the supermolecule. Following this procedure, the first azadithiolate-bridged dinuclear iron complex coordinated by a phosphine ligand [(μ-ADT)Fe 2(CO)5PPh3] (4, R = 4-bromophenyl) was synthesized.
H2 evolution catalyzed by a FeFe-hydrogenase synthetic model covalently attached to graphite surfaces
Ahmed, Md Estak,Dey, Subal,Mondal, Biswajit,Dey, Abhishek
, p. 8188 - 8191 (2017/07/24)
A synthetic mimic of Fe-Fe hydrogenase (H2ase) is reported which bears a terminal alkyne group in the ligand. Using a terminal azide bearing organic linkers, this complex could be covalently attached to various electrode surfaces (e.g. edge pla
Synthesis and structure of a biomimetic model of the iron hydrogenase active site covalently linked to a ruthenium photosensitizer
Ott, Sascha,Kritikos, Mikael,Akermark, Bjoern,Sun, Licheng
, p. 3285 - 3288 (2007/10/03)
First synthetic steps towards light-driven hydrogen production have been achieved by covalently linking a [RuII(terpy)2] (terpy=2,2′:6′,2″-terpyridine) photosensitizer to a biomimetic model of the iron hydrogenase active site (see picture). The IR data show that there is little electronic communication between the redox-active metal centers in the ground state.
