Simple preparation of surface molecularly imprinted polymer based on silica particles for trace level assay of bisphenol F

A new electrochemical sensor based on molecularly imprinted tetraethyl orthosilicate (TEOS)-based porous interface was developed for selective recognition of bisphenol F (BPF) in this study. The sensor was prepared by depositing the solution containing TEOS and L-tryptophan (L-Trp) in the presence o...

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Bibliographic Details
Published in:Analytical and bioanalytical chemistry 2022-08, Vol.414 (19), p.5793-5803
Main Authors: Kaya, S. Irem, Corman, M. Emin, Uzun, Lokman, Ozkan, Sibel A.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Biochemistry
Bisphenols
Bottled water
Cetyltrimethylammonium bromide
Characterization and Evaluation of Materials
Chemical sensors
Chemistry
Chemistry and Materials Science
Drinking water
Electrochemical analysis
Electrochemical impedance spectroscopy
Electrochemistry
Food Science
Fourier transform infrared spectroscopy
Fourier transforms
Glassy carbon
Identification and classification
Imprinted polymers
Infrared spectroscopy
Laboratory Medicine
Monitoring/Environmental Analysis
Pollution detection
Polymers
Properties
Research Paper
Scanning electron microscopy
Scanning microscopy
Sensors
Silica
Spectrum analysis
Structural analysis
Tetraethoxysilane
Tetraethyl orthosilicate
Tryptophan
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Summary:A new electrochemical sensor based on molecularly imprinted tetraethyl orthosilicate (TEOS)-based porous interface was developed for selective recognition of bisphenol F (BPF) in this study. The sensor was prepared by depositing the solution containing TEOS and L-tryptophan (L-Trp) in the presence of cetyltrimethylammonium bromide (CTAB) as a pore-maker via hydrolysis/condensation reaction on the glassy carbon electrode (GCE). While the surface morphology and structure characterization were carried out using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), electrochemical characterization was performed through electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The resulted MIP(TEOS:L-Trp)@GCE achieved a wide linear range of 1 × 10 −15 –1 × 10 −14  M for BPF detection with an excellent detection limit of 0.291 fM. Furthermore, the recovery of BPF from spiked bottled water and serum samples varied between 98.83 and 101.03%. These results demonstrate that MIP(TEOS:L-Trp)@GCE was found to be a simple, sensitive, and selective smart interface to detect trace pollution even from complicated samples. Graphical abstract
ISSN:1618-2642
1618-2650
DOI:10.1007/s00216-022-04142-z