Construction of Heterogeneous Aggregation-Induced Emission Microspheres with Enhanced Multi-Mode Information...

Area of Science:

• Materials Science
• Chemistry
• Optoelectronics

Background:

• Traditional organic light-emitting materials suffer from aggregation-caused quenching, limiting their use in solid-state anti-counterfeiting.
• Developing stable and efficient fluorescent materials for anti-counterfeiting is crucial for information security.

Purpose of the Study:

• To synthesize aggregation-induced emission (AIE) microspheres with diverse morphologies for anti-counterfeiting applications.
• To investigate the erasable properties and encryption capabilities of these novel AIE microspheres.

Main Methods:

• A facile method was employed to incorporate AIE molecules into microspheres, controlling morphology via reaction parameters.
• Synthesized spherical, apple-shaped, and hemoglobin-like AIE microspheres.
• Utilized photocyclization and oxidation of tetraphenylethene for microsphere functionality.

Main Results:

• Successfully prepared AIE microspheres with tunable morphologies.
• Demonstrated erasable fluorescent ink properties, where patterns on paper could be erased by UV light exposure.
• Showcased multi-morphology microspheres for advanced information encryption in barcodes and 2D codes.

Conclusions:

• The developed AIE microspheres offer a promising platform for reliable anti-counterfeiting and information encryption.
• The erasable nature and multi-information storage capabilities address limitations of traditional materials.
• This approach enables advanced security features through fluorescence spectroscopy and laser confocal microscopy validation.