Fabrication of Bifunctional Gold/Gelatin Hybrid Nanocomposites and Their Application
- Herein, a facile method is presented to integrate large gold nanoflowers (similar to 80 nm) and small gold nanoparticles (2-4 nm) into a single entity, exhibiting both surface-enhanced Raman scattering (SERS) and catalytic activity. The as-prepared gold nanoflowers were coated by a gelatin layer, in which the gold precursor was adsorbed and in situ reduced into small gold nanoparticles. The thickness of the gelatin shell is controlled to less than 10 nm, ensuring that the small gold nanoparticles are still in a SERS-active range of the inner Au core. Therefore, the reaction catalyzed by these nanocomposites can be monitored in situ using label-free SERS spectroscopy. In addition, these bifunctional nanocomposites are also attractive candidates for application in SERS monitoring of bioreactions because of their excellent biocompatibility.
Verfasserangaben: | Qianling Cui, Alexey Yashchenok, Lu Zhang, Lidong Li, Admir Masic, Gabriele Wienskol, Helmuth Moehwald, Matias BargheerORCiDGND |
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DOI: | https://doi.org/10.1021/am5000068 |
ISSN: | 1944-8244 |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/24405092 |
Titel des übergeordneten Werks (Englisch): | ACS applied materials & interfaces |
Verlag: | American Chemical Society |
Verlagsort: | Washington |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2014 |
Erscheinungsjahr: | 2014 |
Datum der Freischaltung: | 27.03.2017 |
Freies Schlagwort / Tag: | core-shell nanostructure; gelatin; gold; hybrid material; nanoparticles; surface-enhanced Raman scattering |
Band: | 6 |
Ausgabe: | 3 |
Seitenanzahl: | 4 |
Erste Seite: | 1999 |
Letzte Seite: | 2002 |
Fördernde Institution: | Alexander von Humboldt-Stiftung |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
Peer Review: | Referiert |