Pyridine Detection Using Supramolecular Organic Frameworks Incorporating Cucurbit[10]uril.

Area of Science:

• Supramolecular Chemistry
• Materials Science
• Chemical Sensing

Background:

• Supramolecular organic frameworks (SOFs) offer tunable properties for molecular encapsulation.
• Cucurbit[10]uril (Q[10]) based frameworks exhibit strong affinity for specific guest molecules.
• Developing robust and sensitive pyridine sensors remains an important challenge.

Purpose of the Study:

• To develop a facile physical impregnation method for encapsulating guest molecules into Q[10]-SOF.
• To investigate the pyridine sensing capabilities of guest molecule-loaded Q[10]-SOF.
• To advance pyridine detection and adsorption technologies for commercial applications.

Main Methods:

• Physical impregnation of functional guest molecules into Q[10]-SOF.
• Encapsulation of pyridine into the nanospace of GMs@Q[10]-SOF.
• Characterization of material stability, morphology, and response to pyridine.

Main Results:

• Successful encapsulation of guest molecules into Q[10]-SOF, maintaining framework integrity.
• Demonstrated pyridine response in GMs@Q[10]-SOF solid materials, enabling sensor applications.
• Pyrene-loaded Q[10]-SOF showed fluorescence quenching, while dansyl chloride-loaded Q[10]-SOF showed enhancement upon pyridine detection within 60 s.

Conclusions:

• The developed physical impregnation method is effective for creating pyridine-responsive supramolecular materials.
• Q[10]-SOF-based solid sensors offer a promising platform for rapid and selective pyridine detection.
• These findings contribute to the advancement of gas identification and sensing technologies.