High-Contrast Visualization Chemiluminescence Based on AIE-Active and Base-Sensitive Emitters.

Area of Science:

• Chemical science
• Materials science
• Analytical chemistry

Background:

• Peroxyoxalate chemiluminescence (PO-CL) is a widely used cold light source.
• Aggregation-caused quenching (ACQ) is a major limitation for PO-CL applications.
• Development of novel emitters is crucial for advancing chemiluminescence technologies.

Purpose of the Study:

• To design and synthesize a bifunctional emitter with aggregation-induced emission (AIE) and catalytic properties.
• To explore the application of this emitter in information encryption and decryption.
• To overcome the limitations of ACQ in PO-CL systems.

Main Methods:

• Synthesis of a novel bifunctional emitter derived from salicylic acid.
• Characterization of the emitter's aggregation-induced emission (AIE) properties.
• Investigation of the emitter's catalytic activity in peroxyoxalate chemiluminescence under basic conditions.
• Demonstration of information encryption and decryption using solid bases and the PO-CL solution.

Main Results:

• The synthesized emitter exhibits aggregation-induced emission (AIE) characteristics.
• The emitter acts as a catalyst for the CL process, particularly under basic conditions.
• Chemiluminescence emission was successfully confined to the surface of solid bases.
• A high-contrast visualization of CL emission was achieved, enabling invisible ink applications.

Conclusions:

• A novel bifunctional emitter was developed, addressing ACQ limitations in PO-CL.
• The emitter's unique properties enable secure information encryption and decryption.
• This work presents a promising approach for developing advanced chemiluminescent materials for security applications.