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- Title
In Situ Coupling of Single Molecules Driven by Gold‐Catalyzed Electrooxidation.
- Authors
Zang, Yaping; Stone, Ilana; Inkpen, Michael S.; Ng, Fay; Lambert, Tristan H.; Nuckolls, Colin; Steigerwald, Michael L.; Roy, Xavier; Venkataraman, Latha
- Abstract
A single‐molecule method has been developed based on the scanning tunneling microscope (STM) to selectively couple a series of aniline derivatives and create azobenzenes. The Au‐catalyzed oxidative coupling is driven by the local electrochemical potential at the nanostructured Au STM tip. The products are detected in situ by measuring the conductance and molecular junction elongation and compared with analogous measurements of the expected azobenzene derivatives prepared ex situ. This single‐molecule approach is robust, and it can quickly and reproducibly create reactions for a variety of anilines. We further demonstrate the selective synthesis of geometric isomers and the assembly of complex molecular architectures by sequential coupling of complementary anilines, demonstrating unprecedented control over bond formation at the nanoscale.
- Subjects
SINGLE molecules; SCANNING tunneling microscopy; AZOBENZENE derivatives; ANILINE derivatives; OXIDATIVE coupling
- Publication
Angewandte Chemie, 2019, Vol 131, Issue 45, p16154
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201906215