High quantum yield NIR emission via charge transfer states in buckybowl-TPA based D–A systems

Key Points

• Efficient near-infrared luminescence occurs in nonpolar media, achieving a quantum yield greater than 0.66.
• The NIR emission results from a blend of thermally activated delayed fluorescence and room temperature phosphorescence.
• Analysis of solvent effects reveals strong differences in emission characteristics between acetonitrile and hexane.
• Further research could validate the potential applications of these findings in advanced optical materials.