NDLI: Two-dimensional core-shell donor-acceptor assemblies at metal-organic interfaces promoted by surface-mediated charge transfer.

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Two-dimensional core-shell donor-acceptor assemblies at metal-organic interfaces promoted by surface-mediated charge transfer.

Content Provider	Semantic Scholar
Author	Pia, A. Della Riello, Massimo Stassen, Daphné Jones, Tim S. Bonifazi, Davide Vita, Alessandro De Costantini, Giovanni
Copyright Year	2016
Abstract	Organic charge transfer (CT) complexes obtained by combining molecular electron donors and acceptors have attracted much interest due to their potential applications in organic opto-electronic devices. In order to work, these systems must have an electronic matching - the highest occupied molecular orbital (HOMO) of the donor must couple with the lowest unoccupied molecular orbital (LUMO) of the acceptor - and a structural matching, so as to allow direct intermolecular CT. Here it is shown that, when molecules are adsorbed on a metal surface, novel molecular organizations driven by surface-mediated CT can appear that have no counterpart in condensed phase non-covalent assemblies of donor and acceptor molecules. By means of scanning tunneling microscopy and spectroscopy it is demonstrated that the electronic and self-assembly properties of an electron acceptor molecule can change dramatically in the presence of an additional molecular species with marked electron donor character, leading to the formation of unprecedented core-shell assemblies. DFT and classical force-field simulations reveal that this is a consequence of charge transfer from the donor to the acceptor molecules mediated by the metallic substrate.
Starting Page	19004
Ending Page	19013
Page Count	10
File Format	PDF HTM / HTML
DOI	10.1039/C6NR06527A
PubMed reference number	27808341
Journal	Medline
Volume Number	8
Issue Number	45
Alternate Webpage(s)	http://wrap.warwick.ac.uk/84138/1/WRAP_c6nr06527a.pdf
Alternate Webpage(s)	http://orca.cf.ac.uk/97307/2/Costantini_ESI_revised.pdf
Alternate Webpage(s)	http://www.rsc.org/suppdata/c6/nr/c6nr06527a/c6nr06527a1.pdf
Alternate Webpage(s)	http://orca.cf.ac.uk/97307/1/Della.pdf
Journal	Nanoscale
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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