Multiple-color aggregation-induced emission (AIE) molecules as chemodosimeters for pH sensing

Area of Science:

• Organic Chemistry
• Materials Science
• Analytical Chemistry

Background:

• Schiff-base derivatives are known for their diverse applications.
• Aggregation-induced emission (AIE) materials offer unique optical properties.
• Developing novel pH sensors is crucial for various scientific fields.

Purpose of the Study:

• To synthesize and characterize novel 4-N,N-dimethylaminoaniline salicylaldehyde Schiff-base derivatives (DAS).
• To investigate the aggregation-induced emission (AIE) properties of the synthesized DAS derivatives.
• To explore the potential of DAS derivatives as fluorescent pH sensors.

Main Methods:

• Facile preparation of 4-N,N-dimethylaminoaniline salicylaldehyde Schiff-base derivatives.
• Characterization of optical properties, including fluorescence emission and quantum yield in aggregated states.
• Evaluation of pH-dependent optical responses.

Main Results:

• Successful synthesis of a series of DAS derivatives.
• Demonstration of typical AIE characteristics with varied fluorescence emissions and high quantum yields in aggregated states.
• Observation of unique pH-dependent optical properties.

Conclusions:

• The synthesized DAS derivatives exhibit promising AIE properties.
• The pH-dependent optical behavior of DAS derivatives suggests their utility in pH sensing.
• These findings highlight the potential of DAS derivatives as fluorescent probes for environmental and biological monitoring.