Indexed by:
Abstract:
A rapid method is described for the preparation of a highly uniform and sensitive SERS substrate by an improved ‘drop-and-dry’ method. Gold nanobipyramids (Au NBPs) were prepared inside the nanoholes (nanowalls) of anodic aluminum oxide (AAO) templates with a typically 5-μm nanohole depth. The SERS substrate can be prepared by this method within 40 s and on large scale. The SERS signals obtained with this Au NBPs-AAO substrate is stronger by four-orders of magnitude compared to conventional a silicon wafer substrate. The SERS signal for dopamine (DA; measured at 1311 cm −1 ) is found to be enhanced by a factor of 2.2 × 10 8 . The response to DA extends from 10 nM to 0.1 mM, and the limit of detection is 6.5 nM (at S/N = 3). The assay was applied to the determination of DA in spiked human serum. [Figure not available: see fulltext.]. © 2019, Springer-Verlag GmbH Austria, part of Springer Nature.
Keyword:
Reprint 's Address:
Email:
Source :
Microchimica Acta
ISSN: 0026-3672
Year: 2019
Issue: 4
Volume: 186
6 . 2 3 2
JCR@2019
5 . 4 0 0
JCR@2023
ESI HC Threshold:184
JCR Journal Grade:1
CAS Journal Grade:2
Cited Count:
SCOPUS Cited Count:
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: