双限域基质实现千克级连续可调白色室温磷光碳点复合材料

doi:10.1016/j.actphy.2026.100369

Abstract

Abstract: This study innovatively proposes a matrix proportion regulation strategy to synthesize tunable white room-temperature phosphorescent (RTP) carbon dots embedded B₂O₃-cyanuric acid (CA) dual-confinement composites (denoted W-CD@B₂O₃-CA) via a one-step hydrothermal method. By modulating the matrix ratio and utilizing the multiple confinement effect, the obtained W-CD@B₂O₃-CA achieve wide-range chromaticity tuning from warm white light to neutral white light, and further to cold white light. The color rendering index is elevated from 85.6 to 91.1. Systematic characterizations indicate that the white afterglow emission originates from the synergistic contribution of carbon core size, surface functional groups, and B/N co-doping within the matrix. Based on their unique optical properties, high-contrast fingerprint recognition and multi-level information encryption applications have been successfully developed. Furthermore, by optimizing the synthesis process, kilogram-scale preparation has been achieved with low cost and high yield, offering a novel pathway for the practical exploration of new, efficient white-light RTP materials.

Key words: Tunable white-light afterglow carbon dots composites, Kilogram-scale synthesis, Multiple confinement effects, Fingerprint imaging, Information encryption

Xinzhou Hu, Chuanqi Zhu, Yihong Kang, Linlin Shi, Yongqiang Zhang, Siyu Lu. Dual-confinement matrix enabled kilogram-scale continuously tunable white room-temperature phosphorescent carbon dots composites[J]. Acta Phys. -Chim. Sin. 2026, 42(11), 100369. doi: 10.1016/j.actphy.2026.100369

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Dual-confinement matrix enabled kilogram-scale continuously tunable white room-temperature phosphorescent carbon dots composites

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