Nickel Complex with Internal Bases as Efficient Molecular Catalyst for Photochemical H-2 Production

Yang, Yong (author)

Wang, Mei (author)

Zhang, Fengbo (author)

Chen, Lin (author)

Sun, Licheng (author): KTH,Organisk kemi,State Key Laboratory of Fine Chemicals, DUT-KTH Education and Research Centre on Molecular Devices, Dalian University of Technology (DUT), China

(creator_code:org_t)

2014-09-01
2014
English.
In: ChemSusChem. - : Wiley. - 1864-5631 .- 1864-564X. ; 7:10, s. 2889-2897

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

A Ni complex with internal bases that contain bipyridine-derived ligands, [Ni(L)(2)(H2O)(2)](BF4)(2) ([1](BF4)(2), L=2-(2-pyridyl)-1,8-naphthyridine), and a reference complex that bears analogous bipyridine-derived ligands but without an internal base, [Ni(L)(3)](BF4)(2) ([2](BF4)(2), L=2-(2-pyridyl)quinoline), were synthesized and characterized. The electrochemical properties of these complexes were studied in CH3CN, H2O, and a mixture of EtOH/H2O. The fluorescence spectroscopic studies suggest that both dynamic and the sphere-of-action static quenching exist in the fluorescein Fl(2-)/[1](2+) and Fl(2-)/[2](2+) systems. These noble-metal-free molecular systems were studied for photocatalytic H-2 generation. Under optimal conditions, the turnover number of H-2 evolution reaches 3230 based on [1](2+), whereas [2](2+) displays only approximately one third of the turnover of [1](2+). A plausible mechanism for the catalytic H-2 generation by [1](2+) is presented based on DFT calculations.

By the author/editor: Yang, Yong; Wang, Mei; Xue, Liqin; Zhang, Fengbo; Chen, Lin; Ahlquist, Mårten ...; show more...; Sun, Licheng; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Other Chemistry ...

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