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Templated silver nanocube arrays for single-molecule SERS detection

  • We describe the self-assembly of silver nanocubes (AgNC) into dense bowl-shaped arrays using a template made from polystyrene nanospheres (PSNS). Interestingly, we found that most AgNCs were arranged facet-to-facet. When used as substrates for surface-enhanced Raman scattering (SERS), we observed that the SERS hot spot positions were located at the corners of the cubes. This was confirmed using the formation of a self-assembled monolayer (SAM) of 1-dodecanethiol (DDT) covering the cubes' facet surface, whilst the pinholes in the DDT SAM at the corners were subsequently filled with 2-mercaptopyridine (MPy). Due to the high enhancement from the densely arranged AgNCs, single molecule detection was achieved from this SERS substrate and evidenced using the bi-analyte Raman technique.

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Metadaten
Document Type:Article
Author:Cheng Fang, Daniel Brodoceanu, Tobias KrausORCiD, Nicolas H. VoelckerORCiD
URN:urn:nbn:de:bsz:291:415-2518
DOI:https://doi.org/10.1039/C3RA22457K
Parent Title (English):RSC Advances
Volume:3
Issue:13
First Page:4288
Last Page:4293
Language:English
Year of first Publication:2013
Release Date:2022/11/09
Groups:Strukturbildung
Researchfields:Nanokomposit-Technologie
DDC classes:500 Naturwissenschaften und Mathematik / 540 Chemie
Open Access:Open Access
Signature:INM 2013/19
Licence (German):License LogoUrheberrechtlich gesch├╝tzt