Label-free silver triangular nanoplates for spectrophotometric determination of catecholamines and their metabolites

A novel method towards spectrophotometric determination of catecholamines and their metabolites differing in their functional groups has been developed. This method is based on a change in morphology of silver triangular nanoplates upon the action of cateсholamines and their metabolites, which is ma...

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Bibliographic Details
Published in:Mikrochimica acta (1966) 2020-11, Vol.187 (11), p.610-610, Article 610
Main Authors: Zaytsev, Valeriy D., Furletov, Aleksei A., Apyari, Vladimir V., Garshev, Alexey V., Dmitrienko, Stanislava G., Zolotov, Yury A.
Format: Article
Language:English
Subjects:
Acids
Aluminum
Analytical Chemistry
Calcium ions
Catechol
Catecholamines
Catecholamines - urine
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Colorimetry
Dopamine
Epinephrine
Functional groups
Limit of Detection
Metabolites
Metal Nanoparticles - chemistry
Microengineering
Morphology
Nanochemistry
Nanoparticles
Nanotechnology
Norepinephrine
Original Paper
Povidone
Povidone - chemistry
Selectivity
Silver - chemistry
Sodium Citrate - chemistry
Spectrophotometry
Vanilmandelic Acid - analysis
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Summary:A novel method towards spectrophotometric determination of catecholamines and their metabolites differing in their functional groups has been developed. This method is based on a change in morphology of silver triangular nanoplates upon the action of cateсholamines and their metabolites, which is manifested by the decrease of the nanoparticle local surface plasmon resonance (LSPR) band intensity or its shift to the short-wavelength region of the spectrum. The shift value of the LSPR band or the change of its intensity increases with increasing concentration of catecholamines or their metabolites, which is proposed for their spectrophotometric determination. The limits of detection of catecholamines and their metabolites under selected conditions increase in the series homovanillic acid 
ISSN:0026-3672
1436-5073
DOI:10.1007/s00604-020-04576-1