Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 56, Issue 42, Pages 12852-12856Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201705018
Keywords
scanning tunneling microscopy; self-assembly strategies; surface reaction dynamics; Ullmann coupling
Categories
Funding
- NSFC [91527303, 21333001, 21261130090, 11622437]
- MOST, China [2017YFA0204702, 2013CB933400]
- Thousand Talent Program for Young Outstanding Scientists of the Chinese government
Ask authors/readers for more resources
Ullmann coupling of 4-bromobiphenyl thermally catalyzed on Ag(111), Cu(111), and Cu(100) surfaces was scrutinized by scanning tunneling microscopy as well as theoretical calculations. Detailed experimental evidence showed that initial formation of organometallic intermediates on the surface, as self-assembled structures or sparsely dispersed species, is determined by the subsequent reaction pathway. Specifically, the assembled organometallic intermediates at full coverage underwent a single-barrier process to directly convert into the final coupling products, while the sparsely dispersed intermediates at low coverage went through a double-barrier process via newly identified clover-shaped intermediates prior to formation of the final coupling products. These findings demonstrate that a self-assembly strategy can efficiently steer surface reaction pathways and dynamics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available