Improving the determination of celecoxib in body fluids and pharmaceuticals using a new selective and thermosensitive molecularly imprinted poly(vinylidene fluoride) membrane

2020 ◽  
Vol 12 (16) ◽  
pp. 2185-2195 ◽  
Author(s):  
Negin Yazdanian ◽  
Behrouz Akbari-Adergani ◽  
Maryam Kazemipour ◽  
Homayon Ahmad Panahi ◽  
Mehran Javanbakht
Keyword(s):  
High Selectivity ◽  
Vinylidene Fluoride ◽  
Body Fluids ◽  
Hydroxyethyl Methacrylate ◽  
Molecularly Imprinted ◽  
Poly Vinylidene Fluoride

Molecularly imprinted membranes that demonstrated high selectivity for celecoxib were synthesized using N-vinylcaprolactam and 2-hydroxyethyl methacrylate.

Selective and sensitive sensors based on molecularly imprinted poly(vinylidene fluoride) for determination of pesticides and chemical threat agent simulants

2018 ◽  
Vol 258 ◽  
pp. 228-237 ◽  
Author(s):  
Xuan Hao Lin ◽  
Shalen Xue Ling Aik ◽  
Jacelyn Angkasa ◽  
Qihui Le ◽  
Kah Sing Chooi ◽  
...  
Keyword(s):  
Vinylidene Fluoride ◽  
Molecularly Imprinted ◽  
Poly Vinylidene Fluoride

Construction and Application of Molecularly Imprinted Film Sensor on Determination of Chlorpyrifos in Water

2014 ◽  
Vol 936 ◽  
pp. 843-849 ◽  
Author(s):  
Gui Feng Lin ◽  
Yan Hong Wang ◽  
Guo Chen Li ◽  
Wen Bai ◽  
Hong Zhang ◽  
...  
Keyword(s):  
High Selectivity ◽  
Constant Current ◽  
Film Sensor ◽  
Molecularly Imprinted ◽  
Binding Characteristics ◽  
Response Characteristics ◽  
Recognition Element ◽  
Sensitive Film ◽  
Molecularly Imprinted Film

Molecularly imprinted microspheres for recognition of chlorpyrifos were prepared by thermal initiation and precipitation polymerization, and were characterized using scanning electron microscope and infrared spectroscopy. Binding characteristics of the microspheres were also investigated. Sensitive film electrode of chlorpyrifos was prepared using the microspheres above on the surface of gold electrode by spin coating. Electrochemical sensor was constructed with the electrode prepared above as recognition element, and the response characteristics of the sensor to chlorpyrifos in water were investigated based on constant-current potentiometry. It was shown that a reasonable linear response curve between potential and concentration was obtained from 1.0×10-12mol/L to 2.0×10-8mol/L, with a detection limit of 1.0×10-13mol/L. The suitable pH was 2.2~3.4,and response time was 10 min. The imprinted electrode showed relatively high selectivity to chlorpyrifos and was applied to the analysis of chlorpyrifos in the simulated river samples with recovery rates ranging from 89% to 105%.

A chemiluminescence sensor for determination of lysozyme using magnetic graphene oxide multi-walled carbon nanotube surface molecularly imprinted polymers

RSC Advances ◽  
2016 ◽  
Vol 6 (15) ◽  
pp. 12391-12397 ◽  
Author(s):  
Yanhui Wang ◽  
Huimin Duan ◽  
Leilei Li ◽  
Xiaojiao Wang ◽  
Jianbo Li ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Molecularly Imprinted Polymers ◽  
High Selectivity ◽  
Imprinted Polymer ◽  
Magnetic Graphene Oxide ◽  
Molecularly Imprinted ◽  
Magnetic Graphene ◽  
Multi Walled Carbon Nanotube

In this paper, a new chemiluminescence sensor possessing high selectivity and sensitivity was established for determination of lysozyme using magnetic graphene oxide–multi-walled carbon nanotube surface molecularly imprinted polymer.

scholarly journals Size of Heparin-Imprinted Nanoparticles Reflects the Matched Interactions with the Target Molecule

Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2415 ◽  
Author(s):  
Yasuo Yoshimi ◽  
Daichi Oino ◽  
Hirofumi Ohira ◽  
Hitoshi Muguruma ◽  
Ewa Moczko ◽  
...  
Keyword(s):  
High Selectivity ◽  
Specific Interaction ◽  
Trimethylammonium Chloride ◽  
Imprinted Polymer ◽  
Molecularly Imprinted ◽  
Target Molecule ◽  
Gate Effect ◽  
New Applications ◽  
Very High

It has been shown that the faradic current at an electrode grafted with molecularly imprinted polymer (MIP) is sensitive to the specific target molecule used as the template. This phenomenon is applicable to sensors with very high selectivity, but the sensing mechanism is still a black box. We investigated the size sensitivity of nanoparticles of molecularly imprinted polymers (MIP-NPs) to a specific interaction for determination of the mechanism of the gate effect and its feasibility for new applications. Nanoparticles of poly(methacryloxy ethyl trimethylammonium chloride-co-acrylamide-co-methylenebisacrylamide) imprinted with heparin immobilized on glass beads were synthesized. The diameter of the MIP-NPs of heparin was increased by the presence of the heparin template but was insensitive to chondroitin sulfate C (CSC), the analogue of heparin. The high selectivity of the MIP-NPs was consistent with the selectivity of electrodes grafted with a heparin-imprinted polymer in our previous studies. The quartz crystal microbalance probes immobilizing heparin or CSC were sensitive to MIP-NPs, which indicates that the binding ability of MIP-NP does not discriminate between the template and other glycosaminoglycans. These results indicate that the size of the MIP-NP is sensitive to the matched binding with the template through the imprinted cavity.

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