Novel CO₂ Fluorescence Turn-On Quantification Based on a Dynamic AIE-Active Metal-Organic Framework

Area of Science:

• Materials Science
• Chemical Sensing
• Nanotechnology

Background:

• Traditional CO2 sensors are bulky and susceptible to interference from CO and H2O.
• Metal-organic frameworks (MOFs) show promise for fluorescence sensing but lack dynamic aggregation-induced emission (AIE).

Purpose of the Study:

• To develop a novel MOF with dynamic AIE properties for enhanced CO2 sensing.
• To establish a fluorescence-based method for accurate CO2 quantification in mixed gases.

Main Methods:

• Synthesis of a novel MOF exhibiting AIE characteristics.
• Characterization of the MOF's fluorescence properties in various environments.
• Development of a linear fluorescence quantification method for CO2.

Main Results:

• The novel MOF demonstrates dynamic AIE activity, converting aggregation-caused quenching to bright fluorescence in viscous media.
• A linear fluorescence response for CO2 quantification was achieved across a wide concentration range (2.5-100%).
• The developed sensor overcomes limitations of traditional CO2 sensing technologies.

Conclusions:

• This work presents the first example of MOFs exhibiting dynamic AIE.
• The novel MOF offers a promising platform for next-generation all-solid-state fluorescence sensing.
• This advancement paves the way for improved CO2 detection technologies.