| Br(-)-induced facile fabrication of spongelike gold/amino acid nanocomposites and their applications in surface-enhanced Raman scattering. | |
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MedLine Citation:
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PMID: 20695594 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We report a facile method for the fabrication of spongelike gold/amino acid nanocomposites by the addition of NaBr to glutamic acid-stabilized gold nanoparticles (GNPs) at room temperature. The gold/glutamic acid (Glu) nanocomposite is characterized by TEM, SEM, UV-vis spectroscopy, and XRD measurements. The results suggest that the three-dimensional spongelike gold/Glu nanocomposites with mean diameter of 50 nm are formed via the nanospheres fusing into one another. The driving force for the fabrication of spongelike gold/amino acid nanocomposites is the van der Waals attractive forces of Br(-) partially coated GNPs. Furthermore, the obtained spongelike gold nanocomposites can be used as surface-enhanced Raman scattering (SERS) substrates with high SERS activity and stability for detecting Rhodamine 6G (R6G) molecules. Hence, NaBr-mediated preparation of SERS substrates described in this work has potential applications in chemical and biological analysis as well as medical detection. |
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Authors:
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Yan Liu; Lili Liu; Rong Guo |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Langmuir : the ACS journal of surfaces and colloids Volume: 26 ISSN: 1520-5827 ISO Abbreviation: Langmuir Publication Date: 2010 Aug |
Date Detail:
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Created Date: 2010-08-10 Completed Date: 2010-11-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882736 Medline TA: Langmuir Country: United States |
Other Details:
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Languages: eng Pagination: 13479-85 Citation Subset: IM |
Affiliation:
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College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, PR China. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Amino Acids
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chemistry* Gold / chemistry* Microscopy, Electron, Scanning Microscopy, Electron, Transmission Models, Theoretical Nanocomposites / chemistry*, ultrastructure Spectrophotometry, Ultraviolet Spectrum Analysis, Raman / methods* |
| Chemical | |
Reg. No./Substance:
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0/Amino Acids; 7440-57-5/Gold |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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