Novel multifunctional molecular recognition elements based on molecularly imprinted poly (aniline-co-itaconic acid) composite thin film for melamine electrochemical detection

Development of an ultrasensitive molecularly imprinted poly‐(ortho‐phenylenediamine) based sensor for the determination of melamine adulteration in milk and infant formula

“…The samples were sonicated by ultrasonic bath for 10 min and then centrifuged at 8944 × g for 10 min. Each sample was passed through a 0.45 μm membrane filter to obtain the supernatant (Ji et al., 2017 ; Regasa, Soreta, Femi, Ramamurthy, & Subbiahraj, 2020 ). To obtain the recovery percentages, the supernatant of samples was spiked with different amounts of melamine.…”

Artificial Biomimetic Electrochemical Assemblies

“…Namely, the insulating polymer film blocks electron transport between the transducer and the monomers once its thickness exceeds the range of electron transport (usually in the lower nanometer range), and/or the synthesized film is compact enough to prevent permeation of the monomer to the transducer [ 32 , 105 ]. Electrochemical techniques allow polymerization and doping to be performed simultaneously [ 106 ]. In addition, the sufficient biocompatibility of some conductive polymers [ 17 ] has stimulated interest in the development of suitable imprinted platforms for the detection of microorganisms and clinically relevant biomarkers, which are summarized in Table 2 .…”

“…The electropolymerization of PANI can be carried out either at a constant current, constant potential or by potential sweeping [ 106 ]. The oxidative polymerization of ANI occurs in a wide pH range.…”

“… Electrochemical methods as a tool for preparation of MIP-layers and detection of target molecules: ( A ) preparation of an insulin MIP sensor based on epitope printing, reprinted from [ 71 ]; ( B ) the procedure of MIP nanocomposite-based sensor preparation and subsequent detection of melamine rebinding using SWV, reprinted from [ 106 ]; ( C ) construction of MIP electrochemical sensor for HER2-ECD and corresponding DPV measurements, reprinted from [ 115 ] (all three references with permission from Elsevier B.V.); ( D ) VEGF MIP preparation by electropolymerization and EIS-based recognition, reprinted with permission [ 111 ]. Copyright 2019 Wiley-VCH Verlag GmbH and Co. KG.…”

Detection of melamine based on the suppressed anodic response of uric acid by a Au-Ag nanoparticles modified glassy carbon electrode

“…Although DNA-modified electrochemical sensors are sensitive and save time, the design of DNA sequences and their chemical modification with redox reporters and immobilization processes are complex and expensive. Regasa et al proposed a family of molecularly imprinted copolymer thin films, such as polyaniline, poly(aniline- co -itaconic acid), and poly( aniline co -acrylic acid), deposited on a glassy carbon electrode (GCE) using an in situ electropolymerization method with Mel as a template [ 26 – 28 ]. The electron conductivity of polyaniline films increased with increasing Mel concentrations in the sample solution from the electroactivity of Mel.…”