Imperial College London
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ProfessorEmilianoCortes

Faculty of Engineering, Department of Materials

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e.cortes

 
 
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Location

 

Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Stefancu:2021:10.1021/acs.nanolett.1c02003,
author = {Stefancu, A and Lee, S and Zhu, L and Liu, M and Lucacel, RC and Cortes, E and Leopold, N},
doi = {10.1021/acs.nanolett.1c02003},
journal = {Nano Letters: a journal dedicated to nanoscience and nanotechnology},
pages = {6592--6599},
title = {Fermi level equilibration at the metal-molecule interface in plasmonic systems},
url = {http://dx.doi.org/10.1021/acs.nanolett.1c02003},
volume = {21},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - We highlight a new metal–molecule charge transfer process by tuning the Fermi energy of plasmonic silver nanoparticles (AgNPs) in situ. The strong adsorption of halide ions upshifts the Fermi level of AgNPs by up to ∼0.3 eV in the order Cl– < Br– < I–, favoring the spontaneous charge transfer to aligned molecular acceptor orbitals until charge neutrality across the interface is achieved. By carefully quantifying, experimentally and theoretically, the Fermi level upshift, we show for the first time that this effect is comparable in energy to different plasmonic effects such as the plasmoelectric effect or hot-carriers production. Moreover, by monitoring in situ the adsorption dynamic of halide ions in different AgNP–molecule systems, we show for the first time that the catalytic role of halide ions in plasmonic nanostructures depends on the surface affinity of halide ions compared to that of the target molecule.
AU  - Stefancu,A
AU  - Lee,S
AU  - Zhu,L
AU  - Liu,M
AU  - Lucacel,RC
AU  - Cortes,E
AU  - Leopold,N
DO  - 10.1021/acs.nanolett.1c02003
EP  - 6599
PY  - 2021///
SN  - 1530-6984
SP  - 6592
TI  - Fermi level equilibration at the metal-molecule interface in plasmonic systems
T2  - Nano Letters: a journal dedicated to nanoscience and nanotechnology
UR  - http://dx.doi.org/10.1021/acs.nanolett.1c02003
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000685244900031&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://pubs.acs.org/doi/10.1021/acs.nanolett.1c02003
UR  - http://hdl.handle.net/10044/1/95208
VL  - 21
ER  -
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