Organic Molecules in Zeolites for Long-Lifetime Afterglow

Area of Science:

• Materials Science
• Chemistry
• Nanotechnology

Background:

• Organic afterglow materials are promising for optoelectronics and photobiology.
• Poor host matrix stability currently limits their practical use.

Purpose of the Study:

• To develop novel, stable long afterglow materials using a zeolite host matrix.
• To investigate the impact of aromatic acid guest molecules on afterglow properties.

Main Methods:

• Synthesized AlPO4-5 zeolite composites with terephthalic acid, 2-naphthoic acid, and 1-pyrenecarboxylic acid.
• Characterized the afterglow emission (color, lifetime, intensity) and stability of the composites.

Main Results:

• Composites exhibited tunable blue-to-red afterglow with long lifetimes (up to 1540 ms) and significantly enhanced intensities.
• Zeolite matrix provided excellent stability against radiation, solvents, acids, alkalis, and heat.
• Efficient emission is attributed to zeolite dispersion, adsorption, and host-guest interactions.

Conclusions:

• A new strategy for creating robust, multifunctional long afterglow materials was established.
• AlPO4-5 zeolite hosts enable efficient and stable organic afterglow emission.
• These materials show potential for advanced photobiology and optoelectronic applications.