Novel electrochemical sensor based on molecularly imprinted polymer for selective recognition of sesquiterpene β-caryophyllene

de Assis I.M.; de Moraes M.O.S.; da Conceicao R.C.; Romaguera-Barcelay Y.; de Souza R.F.B.; Larrude D.R.G.; Rocco M.L.M.; Brito W.R.

Novel electrochemical sensor based on molecularly imprinted polymer for selective recognition of sesquiterpene β-caryophyllene

Tipo

Artigo

Data de publicação

2019

Periódico

Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy

Citações (Scopus)

9

Autores

de Assis I.M.
de Moraes M.O.S.
da Conceicao R.C.
Romaguera-Barcelay Y.
de Souza R.F.B.
Larrude D.R.G.
Rocco M.L.M.
Brito W.R.

Resumo

© 2019 Elsevier B.V. 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 selective molecularly imprinted polymer (MIP) for recognition of sesquiterpene β-caryophyllene, constituted of important plants oil-resins and extracts. The non-covalent MIP was synthesized using AA, EGDMA, and AIBN as 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 with MIP for sesquiterpene β-caryophyllene recognition was characterized by electrochemical techniques as cyclic voltammetry (CV) and square wave 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.

Assuntos Scopus

Carbon paste electrode , Caryophyllene , Chemical characterization , Electrochemical techniques , Fourier transform infra red (FTIR) spectroscopy , Modified carbon paste electrode , Molecularly Imprinted Polymer , Square wave voltammetry , Anti-Inflammatory Agents, Non-Steroidal , Biosensing Techniques , Electrochemical Techniques , Electrodes , Limit of Detection , Molecular Imprinting , Polymers , Sesquiterpenes