Highly sensitive and selective electrochemical paper-based device using a graphite screen-printed electrode modified with molecularly imprinted polymers coated Fe3O4@Au@SiO2 for serotonin determination

2019 ◽  
Vol 1077 ◽  
pp. 255-265 ◽  
Author(s):  
Maliwan Amatatongchai ◽  
Jirayu Sitanurak ◽  
Wongduan Sroysee ◽  
Suriyaphon Sodanat ◽  
Sanoe Chairam ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Screen Printed Electrode ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Highly Sensitive ◽  
Screen Printed

Detection of Bisphenol A in aqueous medium by screen printed carbon electrodes incorporating electrochemical molecularly imprinted polymers

2018 ◽  
Vol 112 ◽  
pp. 156-161 ◽  
Author(s):  
Vitalys Mba Ekomo ◽  
Catherine Branger ◽  
Raphaël Bikanga ◽  
Ana-Mihaela Florea ◽  
Georges Istamboulie ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Aqueous Medium ◽  
Molecularly Imprinted Polymers ◽  
Carbon Electrodes ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Screen Printed

scholarly journals Screen Printed Electrode Based Detection Systems for the Antibiotic Amoxicillin in Aqueous Samples Utilising Molecularly Imprinted Polymers as Synthetic Receptors

Chemosensors ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 5 ◽  
Author(s):  
Oliver Jamieson ◽  
Thais C. C. Soares ◽  
Beatriz A. de Faria ◽  
Alexander Hudson ◽  
Francesco Mecozzi ◽  
...  
Keyword(s):  
Molecularly Imprinted Polymers ◽  
Low Cost ◽  
Synthesis Methods ◽  
Aqueous Samples ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Sensor Platforms ◽  
Sensor Platform ◽  
Thermal Detection ◽  
Screen Printed

Molecularly Imprinted Polymers (MIPs) were synthesised for the selective detection of amoxicillin in aqueous samples. Different functional monomers were tested to determine the optimal composition via batch rebinding experiments. Two different sensor platforms were tested using the same MIP solution; one being bulk synthesized and surface modified Screen Printed Electrodes (SPEs) via drop casting the microparticles onto the electrode surface and the other being UV polymerized directly onto the SPE surface in the form of a thin film. The sensors were used to measure amoxicillin in conjunction with the Heat-Transfer Method (HTM), a low-cost and simple thermal detection method that is based on differences in the thermal resistance at the solid–liquid interface. It was demonstrated that both sensor platforms could detect amoxicillin in the relevant concentration range with Limits of Detection (LOD) of 1.89 ± 1.03 nM and 0.54 ± 0.10 nM for the drop cast and direct polymerisation methods respectively. The sensor platform utilising direct UV polymerisation exhibited an enhanced response for amoxicillin detection, a reduced sensor preparation time and the selectivity of the platform was proven through the addition of nafcillin, a pharmacophore of similar shape and size. The use of MIP-modified SPEs combined with thermal detection provides sensors that can be used for fast and low-cost detection of analytes on-site, which holds great potential for contaminants in environmental aqueous samples. The platform and synthesis methods are generic and by adapting the MIP layer it is possible to expand this sensor platform to a variety of relevant targets.

scholarly journals Luminescent Molecularly Imprinted Polymers Based on Covalent Organic Frameworks and Quantum Dots with Strong Optical Response to Quinoxaline-2-Carboxylicacid

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 708 ◽  
Author(s):  
Zhang ◽  
Zhang ◽  
Liu
Keyword(s):  
Quantum Dots ◽  
Molecularly Imprinted Polymers ◽  
Environmental Control ◽  
Three Dimensional ◽  
Covalent Organic Frameworks ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Covalent Interaction ◽  
Highly Sensitive ◽  
Chemical Selectivity

Three-dimensional molecularly imprinted polymers (MIPs) based on quantum dots-grafted covalent organic frameworks (QDs-grafted COFs) are reported in this study. The compound 1,3,5-triformylphloroglucinol-P-phenylenediamine was used as COF material to react with the amino-modified CdSe/ZnS QDs by Schiff-base reactions. The amino-derived QDs reacted with quinoxaline-2-carboxylicacid (QCA) via a non-covalent interaction. The system combines the advantages of MIPs, COFs, and QDs for highly sensitive and selective QCA detection. The MIPs based on QDs-grafted COFs showed good chemical selectivity and thermal stability, as well as consistency in QCA optosensing. Under optimal conditions, the detection limit for QCA in meat and feed samples was 0.85 μmol L−1, over a linear concentration range of 1–50 μmol L−1. The current findings suggest a potential application of MIPs based on QDs-grafted COFs for the detection of trace levels of hazardous chemicals for food safety and environmental control.

scholarly journals Nanostructured Sensors for Determination of 3-(3,4-Dichlorophenyl)-1,1-Dimethylurea Based in Molecularly Imprinted Polymers (MIPs) Deposited in Screen Printed Carbon Nanotubes

2015 ◽  
Vol 66 (37) ◽  
pp. 33-41 ◽  
Author(s):  
R. Fernandez-Cori ◽  
J. C. Morales Gomero ◽  
B. C. Huayhuas-Chipana ◽  
M. d. P. Taboada Sotomayor ◽  
J. G. Ruiz Montoya
Keyword(s):  
Carbon Nanotubes ◽  
Molecularly Imprinted Polymers ◽  
Molecularly Imprinted ◽  
Imprinted Polymers ◽  
Nanostructured Sensors ◽  
Screen Printed
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