The Effect of Surface Modification of Gold Nanotriangles for Surface-Enhanced Raman Scattering Performance.
AOT bilayer
PEI coating
SERS enhancement factor
dimerization of 4-nitrothiophenol
spiked and crumble gold nanotriangles
undulated
Journal
Nanomaterials (Basel, Switzerland)
ISSN: 2079-4991
Titre abrégé: Nanomaterials (Basel)
Pays: Switzerland
ID NLM: 101610216
Informations de publication
Date de publication:
02 Nov 2020
02 Nov 2020
Historique:
received:
21
10
2020
accepted:
29
10
2020
entrez:
5
11
2020
pubmed:
6
11
2020
medline:
6
11
2020
Statut:
epublish
Résumé
A surface modification of ultraflat gold nanotriangles (AuNTs) with different shaped nanoparticles is of special relevance for surface-enhanced Raman scattering (SERS) and the photo-catalytic activity of plasmonic substrates. Therefore, different approaches are used to verify the flat platelet morphology of the AuNTs by oriented overgrowth with metal nanoparticles. The most important part for the morphological transformation of the AuNTs is the coating layer, containing surfactants or polymers. By using well established AuNTs stabilized by a dioctyl sodium sulfosuccinate (AOT) bilayer, different strategies of surface modification with noble metal nanoparticles are possible. On the one hand undulated superstructures were synthesized by in situ growth of hemispherical gold nanoparticles in the polyethyleneimine (PEI)-coated AOT bilayer of the AuNTs. On the other hand spiked AuNTs were obtained by a direct reduction of Au
Identifiants
pubmed: 33147806
pii: nano10112187
doi: 10.3390/nano10112187
pmc: PMC7694140
pii:
doi:
Types de publication
Journal Article
Review
Langues
eng
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