Cobalt-imidazole metal-organic framework loaded with luminol for paper-based chemiluminescence detection of catechol with use of a smartphone

Chemiluminescence (CL) reagent luminol was loaded into the porous structure of cobalt-imidazole metal-organic framework (MOF) ZIF-67 to obtain luminol-functionalized ZIF-67 (luminol@ZIF-67) with CL property. The morphology, composition, CL property, and CL mechanism of luminol@ZIF-67 were carefully...

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Bibliographic Details
Published in:Analytical and bioanalytical chemistry 2021-05, Vol.413 (13), p.3541-3550
Main Authors: Li, Zimu, Xi, Yachao, Zhao, Anqi, Jiang, Jianming, Li, Bing, Yang, Xinming, He, Jianbo, Li, Fang
Format: Article
Language:English
Subjects:
Analysis
Analytical Chemistry
Biochemistry
Catechin
Catechol
Characterization and Evaluation of Materials
Chemiluminescence
Chemistry
Chemistry and Materials Science
Cobalt
Composition
Drinking water
Emission
Emissions
Food Science
Hydrogen peroxide
Identification and classification
Imidazole
Laboratory Medicine
Luminol
Metal-organic frameworks
Monitoring/Environmental Analysis
Morphology
Organometallic compounds
Properties
Reagents
Research Paper
Smart phones
Smartphones
Spectra
Water analysis
Water sampling
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Summary:Chemiluminescence (CL) reagent luminol was loaded into the porous structure of cobalt-imidazole metal-organic framework (MOF) ZIF-67 to obtain luminol-functionalized ZIF-67 (luminol@ZIF-67) with CL property. The morphology, composition, CL property, and CL mechanism of luminol@ZIF-67 were carefully investigated. The obtained luminol@ZIF-67 exhibited strong, stable, and visible CL emission that reacted with H 2 O 2 , attributed to the strong catalytic effect of ZIF-67 combined with the shortened diffusion distance between luminol and the catalytic center. The CL intensity of luminol@ZIF-67 was more than 550 times higher than that of luminol. Catechol can effectively quench the CL emission of luminol@ZIF-67 that reacted with H 2 O 2 . Then, a simple paper-based CL imaging detection method was developed for the detection of catechol by using a smartphone as a portable detector. The linear calibration curve of the developed CL assay for catechol ranged from 5 to 100 mg/L with detection limit of 1.1 mg/L (S/N = 3δ). The strong CL emission of luminol@ZIF-67 combined with the effective quench ability of catechol guaranteed high sensitivity of the detection method. The practical application ability of the developed CL assay was tested by the determination of catechol in tea and tap water samples, resulting in acceptable results. This work provides an effective paper-based CL detection method for catechol and enriches the species of the chemiluminescent MOF material. Graphical abstract
ISSN:1618-2642
1618-2650
DOI:10.1007/s00216-021-03305-8