Polymer membrane-based ion-, gas- and bio-selective potentiometric sensors

Area of Science:

• Electrochemistry
• Polymer Science
• Analytical Chemistry
• Biomedical Engineering

Background:

• Polymer membrane-based potentiometric electrodes are crucial for selective ion, gas, and biosensing.
• Accurate measurement of analytes in complex biological matrices remains a challenge.
• Integration of biological recognition elements with electrode transducers is key for biosensor development.

Purpose of the Study:

• To review recent advancements in polymer membrane-based potentiometric electrodes.
• To highlight the performance of novel electrodes for measuring anions and gases in biological samples.
• To explore the potential of these electrodes as transducers for integrated biosensors.

Main Methods:

• Design and characterization of new polymer membrane formulations for potentiometric electrodes.
• Evaluation of electrode performance for in vitro and in vivo measurements of specific anions and gases.
• Demonstration of electrode integration with biological reagents (enzymes, antibodies) for biosensing applications.

Main Results:

• Demonstrated high performance of polymer membrane electrodes for measuring anions (salicylate, thiocyanate, chloride, heparin) and gases (ammonia, carbon dioxide, oxygen).
• Showcased the versatility of these electrodes as transducers for developing enzyme- and antibody-based biosensors.
• Presented new methods for mass fabrication of solid-state ion and biosensor devices.

Conclusions:

• Polymer membrane-based potentiometric electrodes offer a promising platform for selective and sensitive analyte detection in biological samples.
• These electrodes serve as versatile transducers, enabling the development of advanced integrated biosensors.
• Future research directions include further optimization of sensor design, fabrication, and application in complex biological systems.