Redox-active on-surface polymerization of single-site divalent cations from pure metals by a ketone-functionalized phenanthroline

The Journal of Chemical Physics
Daniel SkomskiSteven L Tait

Abstract

Metallic iron, chromium, or platinum mixing with a ketone-functionalized phenanthroline ligand on a single crystal gold surface demonstrates redox activity to a well-defined oxidation state and assembly into thermally stable, one dimensional, polymeric chains. The diverging ligand geometry incorporates redox-active sub-units and bi-dentate binding sites. The gold surface provides a stable adsorption environment and directs growth of the polymeric chains, but is inert with regard to the redox chemistry. These systems are characterized by scanning tunnelling microscopy, non-contact atomic force microscopy, and X-ray photoelectron spectroscopy under ultra-high vacuum conditions. The relative propensity of the metals to interact with the ketone group is examined, and it is found that Fe and Cr more readily complex the ligand than Pt. The formation and stabilization of well-defined transition metal single-sites at surfaces may open new routes to achieve higher selectivity in heterogeneous catalysts.

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Citations

Dec 21, 2016·Chemistry : a European Journal·Chi ZhangWei Xu
Jul 22, 2018·Chemistry : a European Journal·Christopher D TempasSteven L Tait
Feb 13, 2019·Chemistry : a European Journal·Tobias W MorrisSteven L Tait
Apr 14, 2016·Chemistry : a European Journal·Ada Della PiaGiovanni Costantini
Apr 21, 2018·Chemical Science·Christopher D TempasSteven L Tait
Jun 2, 2015·Journal of the American Chemical Society·Daniel SkomskiSteven L Tait
Jul 17, 2018·ACS Nano·Dominic P GoronzyDmitrii F Perepichka
Jun 30, 2015·Accounts of Chemical Research·Rico GutzlerKlaus Kern

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