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Alkyne-functionalized superstable graphitic silver nanoparticles for raman imaging
Song Z.-L.1,2; Chen Z.1,2; Bian X.1,2; Zhou L.-Y.1,2; Ding D.1,2; Liang H.1,2; Zou Y.-X.1,2; Wang S.-S.1,2; Chen L.1,2; Yang C.1,2; Zhang X.-B.1,2; Tan W.1,2,3,4
2014
Source PublicationJournal of the American Chemical Society
ISSN27863
Volume136Issue:39Pages:13558
Abstract

Noble metals, especially gold, have been widely used in plasmon resonance applications. Although silver has a larger optical cross section and lower cost than gold, it has attracted much less attention because of its easy corrosion, thereby degrading plasmonic signals and limiting its applications. To circumvent this problem, we report the facile synthesis of superstable AgCu@graphene (ACG) nanoparticles (NPs). The growth of several layers of graphene onto the surface of AgCu alloy NPs effectively protects the Ag surface from contamination, even in the presence of hydrogen peroxide, hydrogen sulfide, and nitric acid. The ACG NPs have been utilized to enhance the unique Raman signals from the graphitic shell, making ACG an ideal candidate for cell labeling, rapid Raman imaging, and SERS detection. ACG is further functionalized with alkyne-polyethylene glycol, which has strong Raman vibrations in the Raman-silent region of the cell, leading to more accurate colocalization inside cells. In sum, this work provides a simple approach to fabricate corrosion-resistant, water-soluble, and graphene-protected AgCu NPs having a strong surface plasmon resonance effect suitable for sensing and imaging. © 2014 American Chemical Society.

DOI10.1021/ja507368z
URLView the original
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000342608800023
The Source to ArticleScopus
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Citation statistics
Cited Times [WOS]:92   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF COMPUTER AND INFORMATION SCIENCE
Affiliation1.Hunan Univ, Mol Sci & Biomed Lab, State Key Lab Chemobiosensing & Chemometr, Coll Chem & Chem Engn,Coll Biol, Changsha 410082, Hunan, Peoples R China
2.Hunan Univ, Collaborat Innovat Ctr Mol Engn & Theronast, Changsha 410082, Hunan, Peoples R China
3.Univ Florida, Dept Chem, Ctr Res Bionanointerface, Shands Canc Ctr,UF Genet Inst, Gainesville, FL 32611 USA
4.Univ Florida, Dept Physiol & Funct Gen, McKnight Brain Inst, Gainesville, FL 32611 USA
5.Univ Macau, Fac Sci, Macao, Peoples R China
Recommended Citation
GB/T 7714
Song Z.-L.,Chen Z.,Bian X.,et al. Alkyne-functionalized superstable graphitic silver nanoparticles for raman imaging[J]. Journal of the American Chemical Society,2014,136(39):13558.
APA Song Z.-L..,Chen Z..,Bian X..,Zhou L.-Y..,Ding D..,...&Tan W..(2014).Alkyne-functionalized superstable graphitic silver nanoparticles for raman imaging.Journal of the American Chemical Society,136(39),13558.
MLA Song Z.-L.,et al."Alkyne-functionalized superstable graphitic silver nanoparticles for raman imaging".Journal of the American Chemical Society 136.39(2014):13558.
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