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Tunnelling current recognition through core-satellite gold nanoparticles for ultrasensitive detection of copper ions

Foroushani, Alireza, Zhang, Yuanchao, Li, Da, Mathesh, Motilal, Wang, Hongbin, Yan, Fuhua, Barrow, Colin J., He, Jim and Yang, Wenrong 2015, Tunnelling current recognition through core-satellite gold nanoparticles for ultrasensitive detection of copper ions, Chemical Communications, vol. 51, no. 14, pp. 2921-2924, doi: 10.1039/c4cc09451d.

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Title Tunnelling current recognition through core-satellite gold nanoparticles for ultrasensitive detection of copper ions
Author(s) Foroushani, Alireza
Zhang, Yuanchao
Li, Da
Mathesh, Motilal
Wang, Hongbin
Yan, Fuhua
Barrow, Colin J.ORCID iD for Barrow, Colin J. orcid.org/0000-0002-2153-7267
He, Jim
Yang, WenrongORCID iD for Yang, Wenrong orcid.org/0000-0001-8815-1951
Journal name Chemical Communications
Volume number 51
Issue number 14
Start page 2921
End page 2924
Total pages 4
Publisher Royal Society of Chemistry
Place of publication Cambridge, Eng.
Publication date 2015-02-18
ISSN 1364-548X
Keyword(s) Copper
Cysteine
Gold
Chemistry
Hydrogen Bonding
Limit of Detection
Metal Nanoparticles
Summary We report a new method for ultrasensitive detection of Cu(2+), which is based on changes in the tunnelling recognition current across self-assembled core-satellite gold nanoparticles (GNPs) networks functionalised with amino acids (l-cysteine). The addition of copper ions induces the formation of GNP/l-cysteine/Cu(2+)/l-cysteine/GNP molecular junctions and generates a significant decrease in the resistance through the networks. The networks are ultrasensitive to over ten orders range of copper ion concentrations.
Language eng
DOI 10.1039/c4cc09451d
Field of Research 030302 Nanochemistry and Supramolecular Chemistry
03 Chemical Sciences
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Royal Society of Chemistry
Persistent URL http://hdl.handle.net/10536/DRO/DU:30070981

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