MIP-Based Impedimetric Sensors

2013 ◽  
Vol 543 ◽  
pp. 499-502 ◽  
Author(s):  
Florence Lagarde

Molecular imprinting technique allows the preparation of tailor-made materials with high recognition faculty towards target molecules. Molecular imprinted polymers (MIPs) are more robust, easier to manipulate and cheaper than biological receptors, constituting very attractive alternatives to biomolecules as recognition elements in the elaboration of biosensors. In this paper, the principles and advantages of MIP-based impedimetric sensors are described and some examples of application in the biological or environmental fields are given.

2017 ◽  
Vol 5 (3) ◽  
pp. 388-402 ◽  
Author(s):  
Shabi Abbas Zaidi

Molecular imprinted polymerization is considered one of the most useful preparation strategies to obtain highly selective polymeric materials called molecular imprinted polymers (MIPs).


2020 ◽  
Vol 16 (3) ◽  
pp. 196-207 ◽  
Author(s):  
Yeşeren Saylan ◽  
Adil Denizli

Introduction: A molecular imprinting is one of the fascinating modification methods that employ molecules as targets to create geometric cavities for recognition of targets in the polymeric matrix. This method provides a broad versatility to imprint target molecules with different size, three-dimensional structure and physicochemical features. In contrast to the complex and timeconsuming laboratory surface modification procedures, this method offers a rapid, sensitive, inexpensive, easy-to-use, and selective approach for the diagnosis, screening and monitoring disorders. Owing to their unique features such as high selectivity, physical and chemical robustness, high stability, low-cost and reusability of this method, molecularly imprinted polymers have become very attractive materials and been applied in various applications from separation to detection. Background: The aims of this review are structured according to the fundamentals of molecularly imprinted polymers involving essential elements, preparation procedures and also the analytical applications platforms. Finally, the future perspectives to increase the development of molecularly imprinted platforms. Methods: A molecular imprinting is one of the commonly used modification methods that apply target as a recognition element itself and provide a wide range of versatility to replica other targets with a different structure, size, and physicochemical features. A rapid, easy, cheap and specific recognition approach has become one of the investigation areas on, especially biochemistry, biomedicine and biotechnology. In recent years, several technologies of molecular imprinting method have gained prompt development according to continuous use and improvement of traditional polymerization techniques. Results: The molecularly imprinted polymers with excellent performances have been prepared and also more exciting and universal applications have been recognized. In contrast to the conventional methods, the imprinted systems have superior advantages including high stability, relative ease and low cost of preparation, resistance to elevated temperature, and pressure and potential application to various target molecules. In view of these considerations, molecularly imprinted systems have found application in various fields of analytical chemistry including separation, purification, detection and spectrophotometric systems. Conclusion: Recent analytical methods are reported to develop the binding kinetics of imprinted systems by using the development of other technologies. The combined platforms are among the most encouraging systems to detect and recognize several molecules. The diversity of molecular imprinting methods was overviewed for different analytical application platforms. There is still a requirement of more knowledge on the molecular features of these polymers. A next step would further be the optimization of different systems with more homogeneous and easily reachable recognition sites to reduce the laborious in the accessibility in the three-dimensional polymeric materials in sufficient recognition features and also better selectivity and sensitivity for a wide range of molecules.


2017 ◽  
Vol 9 (47) ◽  
pp. 6682-6688 ◽  
Author(s):  
Jing Wang ◽  
Yaxin Sang ◽  
Weihua Liu ◽  
Na Liang ◽  
Xianghong Wang

In this study, a direct competitive biomimetic enzyme-linked immunosorbent assay (BELISA) method using molecularly imprinted polymers (MIPs) as artificial antibodies was developed to detect enrofloxacin (ENRO) in animal-based food.


RSC Advances ◽  
2018 ◽  
Vol 8 (63) ◽  
pp. 36191-36199 ◽  
Author(s):  
Xinhua Yuan ◽  
Tiantian Liu ◽  
Lei Gao ◽  
Lu Xing ◽  
Yingying Zhu ◽  
...  

Through surface molecular imprinting technique and coating superparamagnetic Fe3O4 nanoparticles with molecularly imprinted polymers, a novel MMIP was successfully fabricated for the convenient separation of DEHP.


Sensors ◽  
2019 ◽  
Vol 19 (16) ◽  
pp. 3485 ◽  
Author(s):  
Brian Regan ◽  
Fiona Boyle ◽  
Richard O’Kennedy ◽  
David Collins

Molecular imprinting is a rapidly growing area of interest involving the synthesis of artificial recognition elements that enable the separation of analyte from a sample matrix and its determination. Traditionally, this approach can be successfully applied to small analyte (<1.5 kDa) separation/ extraction, but, more recently it is finding utility in biomimetic sensors. These sensors consist of a recognition element and a transducer similar to their biosensor counterparts, however, the fundamental distinction is that biomimetic sensors employ an artificial recognition element. Molecularly imprinted polymers (MIPs) employed as the recognition elements in biomimetic sensors contain binding sites complementary in shape and functionality to their target analyte. Despite the growing interest in molecularly imprinting techniques, the commercial adoption of this technology is yet to be widely realised for blood sample analysis. This review aims to assess the applicability of this technology for the point-of-care testing (POCT) of cardiovascular disease-related biomarkers. More specifically, molecular imprinting is critically evaluated with respect to the detection of cardiac biomarkers indicative of acute coronary syndrome (ACS), such as the cardiac troponins (cTns). The challenges associated with the synthesis of MIPs for protein detection are outlined, in addition to enhancement techniques that ultimately improve the analytical performance of biomimetic sensors. The mechanism of detection employed to convert the analyte concentration into a measurable signal in biomimetic sensors will be discussed. Furthermore, the analytical performance of these sensors will be compared with biosensors and their potential implementation within clinical settings will be considered. In addition, the most suitable application of these sensors for cardiovascular assessment will be presented.


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