Metal–organic frameworks supported surface–imprinted nanoparticles for the sensitive detection of metolcarb

Fluorescence Resonance Energy Transfer-based Biosensor Composed of Nitrogen-doped Carbon Dots and Gold Nanoparticles for the Highly Sensitive Detection of Organophosphorus Pesticides

“…Hence, it is important to develop effective, low-cost and simple methods for detecting organophosphorus pesticides. 2 In recent years, considerable efforts have been devoted to develop electrochemical, 5-9 colorimetric [10][11][12] or fluorescence biosensors [13][14][15][16][17][18][19][20][21][22][23][24][25] based on AchE-enzyme-inhibition strategy for OPs detection, in which the OPs could inhibit the activity of acetylcholinesterase (AChE), and thus prevent hydrolysis reaction of acetylcholine to choline. [26][27][28] Among numerous analytical strategies, a fluorescence assay exhibits some advantages, such as high sensitivity and stability, as well as a fast response.…”

“…Novel nanomaterials with unique chemical and physical properties have been widely employed to develop fluorescence assay for Ops, such as quantum dots (QDs), 16,18,21,24,25 nanocrystal, 17,19,20 graphene, 22 and metal organic frameworks. 23 Based on the AChE-inhibition strategy, Liu et al 13 presented a sensitive rhodamine B-covered gold nanoparticle (AuNPs)-based assay with dual readouts for detecting OPs and carbamate pesticides. The fluorescent readout was a "signal-off" type assay based on released organic dyes by thiocholine through replacement; therefore, the detection limit of the fluorescent and naked eyes were identical (0.1 μg/L).…”

Molecularly Imprinted Polymer/Metal Organic Framework Based Chemical Sensors

“…For this purpose adsorption studies were performed, showing that the frequency change was linear with the concentration of metalocarb in the range from 0.1 to 0.9 mg/L, with a detection limit of 0.0689 mg/L [45]. The analytical performance is reported in Table 1.…”

“…Qian et al [45] reported a quartz microbalance (QCM) MIP sensor employing a type of MOF for the sensitive detection of metalocarb. The MOF MIL-101 was used as a support for synthesizing MIP via a sol-gel process.…”

“…A fluorescence-based sensor was developed by Guo et al [45] for the detection of hemoglobin using bovine hemoglobin as the template molecule, N-isopropyl acrylamide as the temperature-sensitive functional monomer and N,N-methylene bisacrylamide as the cross-linker. Cu3(BTC)2 was used as a representative of the MOF and upconversion nanoparticles were used as The suspension of MIL@MIP was then dropped onto the QCM surface and dried.…”