Fabrication of flexible paper‐based Surface‐enhanced Raman scattering substrate from Au nanocubes monolayer for trace detection of crystal violet on shell

2019 ◽  
Vol 50 (8) ◽  
pp. 1074-1084 ◽  
Author(s):  
Shuang Lin ◽  
Xiang Lin ◽  
Xueying Song ◽  
Siqingaowa Han ◽  
Li Wang ◽  
...  
2015 ◽  
Vol 7 (9) ◽  
pp. 3863-3868 ◽  
Author(s):  
Arniza K. M. Jamil ◽  
Emad L. Izake ◽  
Arumugam Sivanesan ◽  
Roland Agoston ◽  
Godwin A. Ayoko

Extraction and SERS detection of TNT in soil.


2020 ◽  
Vol 15 (11) ◽  
pp. 1321-1326
Author(s):  
Aning Ma ◽  
Wenjing Wei ◽  
Zhongqiang Zhang ◽  
Sichang Peng ◽  
Yurong Wang ◽  
...  

An efficient surface-enhanced Raman scattering substrate based on silver nanoparticles/silicon pyramid arrays structure is theoretically investigated and experimentally demonstrated. The electric field distributions using finite-element-method are calculated. The surface-enhanced Raman scattering behaviors of sensitivity, uniformity and stability are emphatically discussed and compared by the detection of crystal violet. These theoretical and experimental results reveal that the silver nanoparticles/silicon pyramid arrays substrate is expected to be an effective surface-enhanced Raman scattering platform for label-free sensitive surfaceenhanced Raman spectroscopy detection in areas of biotechnology, medicine and food safety.


2013 ◽  
Vol 180 (11-12) ◽  
pp. 997-1004 ◽  
Author(s):  
Bingxiang Liu ◽  
Wei Jiang ◽  
Haiting Wang ◽  
Xiaohui Yang ◽  
Sanjun Zhang ◽  
...  

2020 ◽  
Vol 74 (11) ◽  
pp. 1374-1383
Author(s):  
Jacob E. Olson ◽  
Adam S. Braegelman ◽  
Lei Zou ◽  
Matthew J. Webber ◽  
Jon P. Camden

The cucurbit[n]uril (CB[ n]) family of macrocycles are known to bind a variety of small molecules with high affinity. These motifs thus have promise in an ever-growing list of trace detection methods. Surface-enhanced Raman scattering (SERS) detection schemes employing CB[ n] motifs exhibit increased sensitivity due to selective concentration of the analyte at the nanoparticle surface, coupled with the ability of CB[ n] to facilitate the formation of well-defined electromagnetic hot spots. Herein, we report a CB[7] SERS assay for quantification of phenylalanine (Phe) and further demonstrate its utility for detecting peptides with an N-terminal Phe. The CB[7]–guest interaction improves the sensitivity 5–25-fold over direct detection of Phe using citrate-capped silver nanoparticle aggregates, enabling use of a portable Raman system. We further illustrate detection of insulin via binding of CB[7] to the N-terminal Phe residue on its B-chain, suggesting a general strategy for detecting Phe-terminated peptides of clinically relevant biomolecules.


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