A novel highly sensitive imprinted polymer-based optical sensor for the detection of Pb(II) in water samples

Development of an Optical Sensor Using a Molecularly Imprinted Polymer as a Selective Extracting Agent for the Direct Quantification of Tartrazine in Real Water Samples

“…In all three samples, the band situated at 1650 cm −1 corresponds to C=C from MPS, while the bands at 2950, 1475, 1415, and 780 cm −1 correspond to C-H stretching vibrations from CH 2 and CH 3 present in MPS [ 35 , 36 , 37 ]. On the other hand, for the FF-MIP and FF-NIP spectra, the bands located at 3500 and 1654 cm −1 are possibly related to the N-H and C-O groups from MBAA (from the polymeric structure), while the band at 1516 cm −1 corresponds to the N-H secondary amide group from the MBAA polymer [ 10 , 33 , 38 , 39 , 40 , 41 ]. These bands were also observed in the FTIR spectra of the bulk MIP and NIP materials ( Figure S2 ).…”

Simple distance-based thread analytical device integrated with ion imprinted polymer for Zn2+ quantification in human urine samples

“…[43][44][45][46][47] Generally, IIPs are synthetic polymers that recognize the target imprinted ion and are used primarily to separate the target ion from other ions and/or molecules in a matrix. 43,44,46,[48][49][50][51][52][53][54] For example, Shamsipur et al 43 presented ion-imprinted polymeric nanoparticles for selective separation and sensitive determination of zinc ions in different matrices. Herein we report the integration of IIPs with dTAD sensors for the first time.…”

Smartphone-Based Rapid Quantitative Detection Platform with Imprinted Polymer for Pb (II) Detection in Real Samples

“…The colorimetric interaction between Pb 2+ and some reagents has generated materials whose application also involves color changes, which allows for colorimetric quantification [ 6 , 12 , 13 , 14 , 15 , 16 ]. One of the reagents that has shown a strong interaction with Pb 2+ is sodium rhodizonate.…”

“…The interaction between sodium rhodizonate and lead is based on the formation of a colored complex (reddish coloration) by resonance, where two rhodizonate molecules form a ring around the lead and the oxygens of the rhodizonate enol groups complex the metal [ 13 ]. In the literature, there are a few precedents for the use of rhodizonate in the detection of lead [ 13 , 16 ], as well as the use of rhodizonate for the detection of Pb 2+ in water samples using adsorbent papers impregnated with the reagent [ 6 ]. More recent studies indicate that the interaction between rhodizonate and lead is very strong and specific due to the predetermined orientation of the coordination geometry generated by the rhodizonate ligand [ 6 , 13 , 16 ]; thus, a prevalence of ion chelation is observed in Pb 2+ in the presence of other metals in the colorimetric detection of Pb (II).…”