Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

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

Della Pia, A, Riello, M, Stassen, D, Jones, T.S., Bonifazi, Davide ORCID: https://orcid.org/0000-0001-5717-0121, De Vita, A and Costantini, G 2016. Two-dimensional core-shell donor-acceptor assemblies at metal-organic interfaces promoted by surface-mediated charge transfer. Nanoscale 8 , pp. 19004-19013. 10.1039/C6NR06527A

[thumbnail of Della.pdf]
Preview
PDF - Published Version
Available under License Creative Commons Attribution No Derivatives.

Download (11MB) | Preview
[thumbnail of Costantini_ESI_revised.pdf]
Preview
PDF - Supplemental Material
Download (1MB) | Preview

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.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Royal Society of Chemistry
ISSN: 2040-3372
Date of First Compliant Deposit: 10 January 2017
Date of Acceptance: 18 October 2016
Last Modified: 27 Mar 2024 17:46
URI: https://orca.cardiff.ac.uk/id/eprint/97307

Citation Data

Cited 20 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item

Downloads

Downloads per month over past year

View more statistics