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Article: Radical-Mediated Spin-Transfer on Gold Nanoclusters Driven an Unexpected Luminescence for Protein Discrimination

TitleRadical-Mediated Spin-Transfer on Gold Nanoclusters Driven an Unexpected Luminescence for Protein Discrimination
Authors
Issue Date2017
Citation
Analytical Chemistry, 2017, v. 89, n. 21, p. 11183-11188 How to Cite?
Abstract© 2017 American Chemical Society. Gold nanoclusters (Au NCs) have attracted great interest for unique size-dependent properties, and more properties and applications are still encouraged to be explored and understood. Here we observed an unexpected emission from luminol upon injection of Au NCs, which did not require excitation, strong alkaline-pH regulation, or addition of oxidants, being different from the traditional fluorescence and chemiluminescence. On the basis of both experimental and computational data, the emission was shown to be generated from radical-mediated spin-transfer on Au NCs. Species of O2•- were identified as primary radicals that triggered the spin-transfer from the triplet state of O2 to the aminobenzene ring of luminol by the aids of Au NCs, leading to an efficient phosphorescence. Subsequently, a sensor array composed of five protein-protected Au NCs was fabricated for protein discrimination. This work not only provides new insights of Au NCs into luminol emission but also shows potentials in protein discrimination.
Persistent Identifierhttp://hdl.handle.net/10722/288893
ISSN
2019 Impact Factor: 6.785
2015 SCImago Journal Rankings: 2.369

 

DC FieldValueLanguage
dc.contributor.authorSun, Min-
dc.contributor.authorWu, Liangliang-
dc.contributor.authorRen, Hong-
dc.contributor.authorChen, Xuebo-
dc.contributor.authorOuyang, Jin-
dc.contributor.authorNa, Na-
dc.date.accessioned2020-10-12T08:06:09Z-
dc.date.available2020-10-12T08:06:09Z-
dc.date.issued2017-
dc.identifier.citationAnalytical Chemistry, 2017, v. 89, n. 21, p. 11183-11188-
dc.identifier.issn0003-2700-
dc.identifier.urihttp://hdl.handle.net/10722/288893-
dc.description.abstract© 2017 American Chemical Society. Gold nanoclusters (Au NCs) have attracted great interest for unique size-dependent properties, and more properties and applications are still encouraged to be explored and understood. Here we observed an unexpected emission from luminol upon injection of Au NCs, which did not require excitation, strong alkaline-pH regulation, or addition of oxidants, being different from the traditional fluorescence and chemiluminescence. On the basis of both experimental and computational data, the emission was shown to be generated from radical-mediated spin-transfer on Au NCs. Species of O2•- were identified as primary radicals that triggered the spin-transfer from the triplet state of O2 to the aminobenzene ring of luminol by the aids of Au NCs, leading to an efficient phosphorescence. Subsequently, a sensor array composed of five protein-protected Au NCs was fabricated for protein discrimination. This work not only provides new insights of Au NCs into luminol emission but also shows potentials in protein discrimination.-
dc.languageeng-
dc.relation.ispartofAnalytical Chemistry-
dc.titleRadical-Mediated Spin-Transfer on Gold Nanoclusters Driven an Unexpected Luminescence for Protein Discrimination-
dc.typeArticle-
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1021/acs.analchem.7b02666-
dc.identifier.pmid28971668-
dc.identifier.scopuseid_2-s2.0-85037985912-
dc.identifier.volume89-
dc.identifier.issue21-
dc.identifier.spage11183-
dc.identifier.epage11188-
dc.identifier.eissn1520-6882-

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