A photoredox catalysed Heck reaction via hole transfer from a Ru(ii)-bis(terpyridine) complex to graphene oxide

Marta Rosenthal; Jörg K N Lindner; Uwe Gerstmann; Armin Meier; W Gero Schmidt; René Wilhelm

doi:10.1039/d0ra08749a

A photoredox catalysed Heck reaction via hole transfer from a Ru(ii)-bis(terpyridine) complex to graphene oxide

RSC Adv. 2020 Nov 25;10(70):42930-42937. doi: 10.1039/d0ra08749a. eCollection 2020 Nov 23.

Authors

Marta Rosenthal¹, Jörg K N Lindner², Uwe Gerstmann³, Armin Meier⁴, W Gero Schmidt³, René Wilhelm⁴

Affiliations

¹ Department of Chemistry, University of Paderborn Warburgerstr. 100 33098 Paderborn Germany.
² Department Physics, Experimental Physics, University of Paderborn Warburgerstr. 100 33098 Paderborn Germany.
³ Department of Physics, Theoretical Physics, University of Paderborn Warburgerstr. 100 33098 Paderborn Germany.
⁴ Institute of Organic Chemistry, Clausthal University of Technology Leibnizstr. 6 38678 Clausthal-Zellerfeld Germany rene.wilhelm@tu-clausthal.de.

Abstract

The attachment of homoleptic Ru bis-terpy complexes on graphene oxide significantly improved the photocatalytic activity of the complexes. These straightforward complexes were applied as photocatalysts in a Heck reaction. Due to covalent functionalization on graphene oxide, which functions as an electron reservoir, excellent yields were obtained. DFT investigations of the charge redistribution revealed efficient hole transfer from the excited Ru unit towards the graphene oxide.