Direct measurement and modulation of single-molecule coordinative bonding forces in a transition metal complex
Artikel i vetenskaplig tidskrift, 2013

Coordination chemistry has been a consistently active branch of chemistry since Werner’s seminal theory of coordination compounds inaugurated in 1893, with the central focus on transition metal complexes. However, control and measurement of metal–ligand interactions at the single-molecule level remain a daunting challenge. Here we demonstrate an interdisciplinary and systematic approach that enables measurement and modulation of the coordinative bonding forces in a transition metal complex. Terpyridine is derived with a thiol linker, facilitating covalent attachment of this ligand on both gold substrate surfaces and gold-coated atomic force microscopy tips. The coordination and bond breaking between terpyridine and osmium are followed in situ by electrochemically controlled atomic force microscopy at the single-molecule level. The redox state of the central metal atom is found to have a significant impact on the metal–ligand interactions. The present approach represents a major advancement in unravelling the nature of metal–ligand interactions and could have broad implications in coordination chemistry.

Författare

Xian Hao

Danmarks Tekniske Universitet (DTU)

Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Nan Zhu

Danmarks Tekniske Universitet (DTU)

Tina Gschneidtner

Chalmers, Kemi- och bioteknik, Polymerteknologi

Elvar Ö. Jönsson

Danmarks Tekniske Universitet (DTU)

Jingdong Zhang

Danmarks Tekniske Universitet (DTU)

Kasper Moth-Poulsen

Chalmers, Kemi- och bioteknik, Polymerteknologi

Hongda Wang

Changchun Institute of Applied Chemistry Chinese Academy of Sciences

Kristian S. Thygesen

Danmarks Tekniske Universitet (DTU)

K. W. Jacobsen

Danmarks Tekniske Universitet (DTU)

Jens Ulstrup

Danmarks Tekniske Universitet (DTU)

Qijin Chi

Danmarks Tekniske Universitet (DTU)

Nature Communications

2041-1723 (ISSN)

Vol. 4

Ämneskategorier

Oorganisk kemi

Nanoteknik

DOI

10.1038/ncomms3121