Metal-free multicolor thermoluminescence is unlocked in carbon-dot composites through trap engineering in a carbon nitride matrix. Deep traps govern charge storage and thermally triggered release, enabling tunable emission spanning blue, green, and to yellow-green spectral regions. This work establishes trap engineering as a general strategy for regulating carbon-based thermoluminescence.
J. Jiang, K. Jiang, Z. Cheng, X. Wang, J. Du and H. Lin, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC00677A
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