Quantitative Surface-Enhanced Raman Spectroscopy through the Interface-Assisted Self-Assembly of Three-Dimensional Silver Nanorod Substrates

Analytical Chemistry
Si-Ying LiuJian-Feng Li

Abstract

The realization of surface-enhanced Raman spectroscopy (SERS) to be a reliable quantitative analytical technique requires sensitive and reproducible enhancing substrates. Here, uniform three-dimensional (3D) Ag nanorod (AgNR) substrates with well-defined interlayer spacings are prepared through the air-liquid interface-assisted self-assembly of AgNR in a layer-by-layer manner. The correlation of the SERS performance with the 3D AgNR structures is performed by SERS mapping the substrates. SERS mapping reveals the excellent enhancement uniformity of the 3D substrates with the relative standard deviation (RSD) less than 10%. It finds that both of the number of layers (NL) and the length of the AgNR have effects on the SERS performance of the 3D AgNR substrates. It is demonstrated that the intergaps between layers contribute much to the SERS intensity of the 3D AgNR by creating the interlayer (out-of-plane) plasmonic coupling. The impact of the excitation wavelengths (532, 633, and 785 nm) on SERS performance is also determined. The optimal 3D AgNR structures achieved by the correlation study is further used to detect a set of related molecules (l-tryptophan (Trp), l-phenylalanine (Phe), urea, and melamine). The 3D AgNR SERS of the...Continue Reading

References

Apr 30, 2008·Chemical Society Reviews·Steven E J Bell, Narayana M S Sirimuthu
Apr 22, 2009·Analytical and Bioanalytical Chemistry·Xiu-Mei LinZhong-Qun Tian
Apr 1, 2010·Journal of Agricultural and Food Chemistry·Tsung-Hsuan TsaiShen-Ming Chen
Dec 14, 2011·Lab on a Chip·Charles J ChoiBrian T Cunningham
Mar 20, 2012·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Evelyn KämmerJürgen Popp
Jun 29, 2012·Advanced Materials·Leonid VigdermanEugene R Zubarev
Oct 28, 2014·Journal of the American Chemical Society·Bing HanZhiyong Tang
Dec 8, 2015·Analytical Chemistry·Cyril MuehlethalerJohn R Lombardi
Jun 9, 2016·Analytical Chemistry·Anne-Isabelle HenryRichard P Van Duyne
Aug 28, 2017·Analytica Chimica Acta·Wenbing LiLingxue Kong
Nov 16, 2017·Chemical Communications : Chem Comm·Rajapandiyan PanneerselvamZhong-Qun Tian

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Citations

Aug 1, 2021·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Kaiqiang Wang, Jinjie Li
Nov 5, 2019·ACS Applied Materials & Interfaces·Fengrui XuDavid L Kaplan
Dec 30, 2021·ACS Applied Materials & Interfaces·Huijuan ZhangZhipeng Li

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