A general strategy to construct fluorogenic probes from charge-generation polymers (CGPs) and AIE-active fluorogens...

Area of Science:

• Polymer Chemistry
• Analytical Chemistry
• Materials Science

Background:

• Developing sensitive and selective methods for detecting analytes in aqueous solutions is crucial.
• Existing fluorescent sensing systems often face challenges with sensitivity and specificity.
• Aggregation-induced emission (AIE) materials offer unique optical properties for sensing applications.

Purpose of the Study:

• To develop an aqueous fluorogenic sensing system for detecting specific analytes.
• To utilize charge-generation polymers (CGPs) and aggregation-induced emission (AIE) active fluorogens for enhanced fluorescence.
• To achieve selective and specific analyte-triggerable fluorescence emission.

Main Methods:

• Design and synthesis of selective and specific analyte-triggerable charge-generation polymers (CGPs).
• Utilizing a negatively charged AIE-active fluorogen, TPE-COOH(4).
• Investigating the electrostatic complexation between CGPs and TPE-COOH(4) upon analyte presence.

Main Results:

• The proposed system demonstrates analyte-triggerable fluorescence emission.
• Electrostatic complexation between CGPs and TPE-COOH(4) leads to intense fluorescence.
• The system exhibits high selectivity and specificity for the triggering analyte.
• The aggregation of TPE-COOH(4) is responsible for the observed fluorescence enhancement.

Conclusions:

• An effective aqueous fluorogenic sensing system based on CGPs and AIE fluorogens has been developed.
• The system provides a sensitive and selective method for analyte detection.
• This approach offers a promising platform for developing advanced fluorescent sensors.