Full-color processible afterglow organic small molecular glass

Yufeng Xue, Zongliang Xie, Zheng Yin, Yincai Xu and Bin Liu ()
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Yufeng Xue: National University of Singapore
Zongliang Xie: National University of Singapore
Zheng Yin: National University of Singapore
Yincai Xu: National University of Singapore
Bin Liu: National University of Singapore

Nature Communications, 2025, vol. 16, issue 1, 1-9

Abstract: Abstract Organic afterglow materials, known for their unique luminescent properties and diverse applications, have garnered significant attention in recent years. However, developing long-lasting, high-efficiency, full-color afterglow systems and exploring simple materials processing strategies for new applications are still challenging in this field. Herein, we rationally design a processable molecular glass and employ it as a host in a host-guest strategy to address these challenges. By strategically modifying the host via othyl-methylation, we successfully create a molecular glass and capture its temperature-dependent, processable viscous supercooled liquid state. High-efficiency full color from violet to near-infrared afterglow systems with ultralong lifetimes are developed by doping varied structural dopants. The underlying glass-forming and afterglow mechanisms are also clearly elucidated and verified. Moreover, the excellent glass-forming ability of the host and its viscous supercooled liquid enabled the glass system for large-area fabrication, shaping of objects with diverse 3D structures, and creation of flexible, meter-long afterglow fibers. This work offers significant potential for practical applications in advanced textiles, displays, and other fields.

Date: 2025
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DOI: 10.1038/s41467-025-59787-y

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