Oligomerization of proline catalyzed by Ni on a Au(111) surface
Date
18/04/2019Metadata
Show full item recordAbstract
The reaction of (S)-proline with two-dimensional Ni nanoclusters on Au(111) results in the formation of ordered structures constructed from two distinct types of nickel prolinate complex. Scanning tunnelling microscopy and density functional theory are combined to analyse the supramolecular arrangements produced as a function of annealing temperature. Octahedral Ni(pro)3 complexes are the fundamental building blocks of multiple phases identified by the formation of hexagonal pores of 1 nm diameter. Coexisting with the hexagonal porous phases is a honeycomb phase constructed from Ni(pro)2 complexes. In contrast to the thermal stability of the hexagonal porous phases, the honeycomb phase transforms on heating to a mesh phase which is concluded to be constructed from pro-pro dipeptide species coordinated to Ni ions. At even higher temperature, more extensive oligomerisation occurs to produce an ordered rose phase whose structure is consistent with the formation of oligoproline species.
Citation
Seljamae-Green , R T , Robinson , T , Fruchtl , H A & Baddeley , C J 2019 , ' Oligomerization of proline catalyzed by Ni on a Au(111) surface ' , Journal of Physical Chemistry C , vol. 123 , no. 15 , pp. 9935-9943 . https://doi.org/10.1021/acs.jpcc.9b01004
Publication
Journal of Physical Chemistry C
Status
Peer reviewed
ISSN
1932-7447Type
Journal article
Description
Funding: RTSG acknowledges the Engineering and Physical Sciences Research Council (EPSRC, UK) for the award of a PhD studentship (EP/P505097/1). We thank EaStCHEM for computational support via the EaStCHEM Research Computing Facility.Collections
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