Porous organic polymers as a platform for sensing applications

Area of Science:

• Materials Science
• Analytical Chemistry
• Nanotechnology

Background:

• Sensing analysis is crucial for human health and environmental safety.
• Porous organic polymers (POPs) are emerging materials with tunable structures and inherent porosity.
• Their porous nature facilitates interaction with guest molecules, making them suitable for sensing.

Purpose of the Study:

• To provide a comprehensive overview of porous organic polymers (POPs) as a platform for sensing applications.
• To categorize POP-based sensors and summarize their applications in detecting diverse analytes.
• To discuss structure-based POPs, synthetic strategies, and sensing mechanisms.

Main Methods:

• Review of existing literature on POPs for sensing.
• Categorization of POP-based sensors into fluorescence turn-on, turn-off, ratiometric, colorimetric, and chemiresistive types.
• Analysis of sensing mechanisms including energy transfer, electron transfer, and absorption competition.

Main Results:

• POPs are effectively utilized in fluorescence turn-on/off, ratiometric fluorescent, colorimetric, and chemiresistive sensors.
• POP-based sensors demonstrate applications in detecting explosives, metal ions, anions, small molecules, biological molecules, pH, enantiomers, fingerprints, and temperature.
• Key sensing mechanisms like energy transfer and electron transfer are discussed in relation to POP structures.

Conclusions:

• Porous organic polymers represent a highly promising and versatile material class for advanced sensing technologies.
• The diverse applications and tunable properties of POPs underscore their significance in analytical chemistry and environmental monitoring.
• Further research into POP synthesis and sensing mechanisms will drive innovation in sensor development.