Novel electrochemical sensor based on molecularly imprinted polymer for selective recognition of sesquiterpene β-caryophyllene
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2019
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Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
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Molecularly imprinted polymers provide an excellent platform for the modification of selective electrodes for
sensing applications. Herein, we present a novel modified carbon paste electrode (CPE) with a selectivemolecularly
imprinted polymer (MIP) for recognition of sesquiterpene β-caryophyllene, constituted of important plants
oil-resins and extracts. The non-covalentMIPwas synthesized using AA, EGDMA, and AIBNas a functional monomer,
cross-linker and initiator agent, respectively. Structural and chemical characterization of the synthesized
MIP was conducted through scanning electron microscopy (SEM), Fourier-transform infrared (FT-IR) spectroscopy,
Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). It was possible to verify the functional
features of the synthesized MIP related to the extraction process of the template molecule. The CPE modified
withMIP for sesquiterpene β-caryophyllene recognition was characterized by electrochemical techniques as cyclic
voltammetry (CV) and squarewave voltammetry (SWV). The highest selective recognition electrode enables
to detect concentrations in the range between 1.5 × 10−7 and 7.5 × 10−7 M, showing great potential for applications
in monitoring content of sesquiterpene β-caryophyllene in technological processes and for predicting the
quality of extracts, oils, and resins of plants.
Como referenciar
ASSIS, IGOR M. de; MORAES, MARIA O.S. de; CONCEIÇÃO, RELEM C. da; ROMAGUERA-BARCELAY, YONNY; SOUZA, RODRIGO F.B. de; LARRUDE, DUNIESKYS R.G.; ROCCO, MARIA L.M.; BRITO, WALTER R. Novel electrochemical sensor based on molecularly imprinted polymer for selective recognition of sesquiterpene β-caryophyllene. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, v. 217, p. 271-277, 2019. DOI: 10.1016/j.saa.2019.03.097. Disponível em: http://repositorio.ipen.br/handle/123456789/30012. Acesso em: 24 Apr 2024.
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