Amino Acid Simulated Host-Guest Systems With Full-Color High-Temperature Organic Afterglow

Area of Science:

• Materials Science
• Chemistry
• Solid-State Physics

Background:

• Persistent luminescence materials are crucial for various applications but struggle with high-temperature quenching.
• Developing materials that maintain luminescence at elevated temperatures is a significant scientific challenge.

Purpose of the Study:

• To design and synthesize novel host-guest materials capable of high-temperature persistent luminescence.
• To investigate the role of amino-carboxylic acid hydrogen-bonding in stabilizing luminescence at elevated temperatures.

Main Methods:

• Introduction of amino-carboxylic acid hydrogen-bonding into a host-guest doped material system.
• Utilizing butane-1,2,3,4-tetracarboxylic acid (host D) doped with guest molecules containing amino groups.
• Characterization of afterglow emission properties at temperatures exceeding 430 K.

Main Results:

• Achieved full-color afterglow emission (blue to red) at temperatures above 430 K.
• Demonstrated stable high-temperature afterglow performance in non-hydrogen-bond-donating solvents due to a stable hydrogen-bonded network.
• Observed temperature-dependent afterglow lifetimes.

Conclusions:

• The developed materials exhibit robust high-temperature persistent luminescence, overcoming thermal quenching challenges.
• The strategy of incorporating amino-carboxylic acid hydrogen-bonding is effective for designing high-temperature phosphorescent materials.
• Potential applications include multidimensional information encryption and flow direction markers.