Cobalt oxyhydroxide nanosheet-modulated ratiometric fluorescence platform for the selective detection of malachite green in fish.
Mikrochim Acta
; 191(2): 119, 2024 02 01.
Article
en En
| MEDLINE
| ID: mdl-38300297
ABSTRACT
A ratiometric fluorescence platform was developed based on the cobalt oxyhydroxide (CoOOH) nanosheet-modulated fluorescence response of blue emissive copper nanoclusters (Cu NCs) and yellow emissive o-phenylenediamine (OPD). CoOOH nanosheets showed dual function of strong absorption and oxidation ability, which can effectively quench the blue fluorescence of Cu NCs, with an excitation and emission peak maximum at 390 and 450 nm, respectively , and transfer the OPD into yellow fluorescence products, with an excitation and emission peak maximum at 390 and 560 nm, respectively. Upon introducing butyrylcholinesterase (BChE) and its substrates, CoOOH nanosheets were decomposed into Co2+, and malachite green (MG) showed strong inhibition ability to this process. This resulted in the obvious difference on the ratio of blue and yellow fluorescence recorded on the system in the presence and absence of MG, which was utilized for the quantitative detection of MG, with a limit of detection of 0.140 µM and a coefficient of variation of 3.5%. The fluorescence ratiometric assay showed excellent detection performances in practical sample analysis.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Óxidos
/
Fenilendiaminas
/
Butirilcolinesterasa
/
Cobalto
/
Cobre
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Año:
2024
Tipo del documento:
Article