Achieving High‐Temperature Resistant Afterglow by Modulating Dual‐Mode Emission of Organic Emitters through Defects Engineering

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

Abstract Dual‐mode afterglow, integrating ultralong phosphorescence and delayed fluorescence, offers promising opportunities for developing high‐temperature resistant luminescent materials. However, there is an obvious gap between the emission lifetime of fluorescence phosphorescence. In this work, a dehydration‐induced doping strategy proposed to achieve afterglow by balancing lifetime. The critical role structural defects demonstrated in mechanism, where energy transferred defect states guest molecules determines afterglow. addition, efficient reverse intersystem crossing processes are achieved singlet states, facilitating long‐lived fluorescence. These synergistic effects result prolonged approach that phosphorescence, which produced materials, even up 125 °C. results provide clue modulating dynamics materials applications information security, biomedical diagnosis, chemical sensing.

Language: Английский

Bright upconversion over extended temperatures enabled by an organic surface layer

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: April 5, 2025

Language: Английский