Long-Distance Rate Acceleration by Bulk Gold

Angewandte Chemie
Alexander SchlimmRainer Herges

Abstract

We report on a very unusual case of surface catalysis involving azobenzenes in contact with a Au(111) surface. A rate acceleration of the cis-trans isomerization on gold up to a factor of 1300 compared to solution is observed. By using carefully designed molecular frameworks, the electronic coupling to the surface can be systematically tuned. The isomerization kinetics of molecules with very weak coupling to the metal is similar to that found in solution. For their counterparts with strong coupling, the relaxation rate is shown to depend on the spin-density distribution in the triplet states of the molecules. This suggests that an intersystem crossing is involved in the relaxation process. Aside from their impact on catalytic processes, these effects could be used to trigger reactions over long distances.

References

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Citations

Jul 23, 2019·Chemical Communications : Chem Comm·Talina R RuschOlaf M Magnussen
Jul 30, 2019·Beilstein Journal of Organic Chemistry·Roland LöwRainer Herges
Feb 28, 2020·Angewandte Chemie·Torben Jasper-TönniesRichard Berndt
Oct 30, 2019·Chemistry : a European Journal·Ellen FastFelix Tuczek
Aug 31, 2019·Beilstein Journal of Organic Chemistry·Roland LöwRainer Herges
Dec 29, 2020·Dalton Transactions : an International Journal of Inorganic Chemistry·Finn PetersenFelix Tuczek
Oct 15, 2019·Journal of the American Chemical Society·Li-Qing ZhengRenato Zenobi
Oct 20, 2021·Chemistry : a European Journal·Sebastian HamerRainer Herges

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