Issue 25, 2024

Robust binding between secondary amines and Au electrodes

Abstract

While primary amines are one of the most widely used linker groups for forming single-molecule junctions, it remains elusive whether and how the substitution of one hydrogen in a primary amine with a methyl group (secondary amine) can alter its functional properties as a linker group. Here we show that a robust binding between a secondary amine and an Au electrode is absent with the use of a non-coated Au tip and is achieved when in contact with a wax-coated Au tip, which we propose is catalyzed by the more frequent formation of Au adatoms in measurements with a wax-coated tip.

Graphical abstract: Robust binding between secondary amines and Au electrodes

Supplementary files

Article information

Article type
Communication
Submitted
07 9月 2023
Accepted
06 2月 2024
First published
07 2月 2024
This article is Open Access
Creative Commons BY-NC license

Chem. Commun., 2024,60, 3393-3396

Robust binding between secondary amines and Au electrodes

W. Guo, T. Quainoo, Z. Liu and H. Li, Chem. Commun., 2024, 60, 3393 DOI: 10.1039/D3CC04284G

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