CO₂-responsive tunable persistent luminescence in a hydrogen-bond organized two-component ionic crystal.

Area of Science:

• Materials Science
• Supramolecular Chemistry
• Luminescence

Background:

• Development of responsive materials is crucial for sensing and smart applications.
• Ionic crystals offer tunable properties through self-assembly.
• Carbon dioxide (CO2) detection and manipulation remain significant challenges.

Purpose of the Study:

• To construct a novel CO2-responsive luminescent material.
• To investigate the effect of CO2 on the material's luminescence.
• To explore multicolor emission capabilities.

Main Methods:

• Facile hydrogen-bond self-assembly of a two-component ionic crystal.
• Characterization of the material's structure and luminescent properties.
• Exposure to carbon dioxide to observe reversible changes.

Main Results:

• A reversible CO2-responsive luminescent material was successfully synthesized.
• Carbon dioxide modification altered the green afterglow.
• Inverse excitation wavelength dependence leading to multicolor emission was achieved.

Conclusions:

• The developed ionic crystal is a promising CO2-responsive luminescent material.
• The material demonstrates tunable luminescence for potential sensing applications.
• Facile self-assembly offers a viable route for creating advanced functional materials.