Overview

Polymer-based electrodes have revolutionized the field of biosensors and chemical sensors, as they allow for the rapid and selective detection of biological analytes. These electrodes are made of conductive polymers, which can be modified with various materials and functional groups to enhance their sensitivity, selectivity, and stability. The electrochemistry of these polymer-based electrodes allows for the detection of analytes through a range of electroanalytical methods, including amperometric and impedance spectroscopy. These sensors can be designed to detect a wide range of analytes, from small molecules to large biomolecules, and can have a detection limit in the femtomolar range. One of the materials used to modify polymer-based electrodes is Polyamidoamine (PAMAM) dendrimers, which can increase the electrode's biocompatibility and enhance the immobilization of enzymes and other biorecognition elements. This allows for the development of enzyme-based sensors, which can be used to detect a wide range of biological analytes, including glucose, cholesterol, and neurotransmitters. Nanotechnology has also played a significant role in the development of polymer-based electrodes, with nanocomposites and nanomaterials being used to enhance their sensitivity and stability. Molecular imprinting and synthetic receptors have also been used to create affinity sensors, which can specifically detect a target analyte in a complex mixture. The immobilization of biorecognition elements on the polymer-based electrode surface can be achieved through various methods, including electrospinning and surface modification. The signal transduction can be achieved through various mechanisms, including electrocatalysis, redox reactions, and affinity binding. These electrochemical biosensors can be miniaturized and integrated into point-of-care devices for in vivo monitoring of various analytes. In conclusion, polymer-based electrodes offer a versatile platform for the detection of biological analytes, with potential applications in various fields, including biomedical diagnostics and environmental monitoring. Further research in this field is expected to lead to the development of more sensitive and selective sensors, which can be used for the early diagnosis of various diseases and monitoring of disease progression.

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9781805270904

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