Photophysical properties of fisetin embedded in polymer matrix modulated by both bulk polarity and non-bonding interactions

Chemical Physics Letters, Journal Year: 2024, Volume and Issue: 856, P. 141636 - 141636

Published: Sept. 19, 2024

Language: Английский

Full‐Color Dynamic Afterglow in Carbon Dot‐Based Materials Regulated by Dual‐Phosphorescence Resonance Energy Transfer

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 18, 2024

Abstract Developing afterglow materials with wide‐range and time‐dependent colors is highly desirable but challenging. Herein, by calcinating the mixture of Rhodamine B NH 4 Al(OH) 2 CO 3 , carbon dots (CDs) are generated in situ embedded porous Al O forming CDs@Al composite, which exhibits phosphorescence (TDPCs) from blue to green after excited a UV lamp. Photophysical studies reveal that short lifetime 214 ms originates core state, while long 915 associated surface state CDs. Simultaneous activation different lifetimes induces TDPC performance. Using as donor, series long‐wavelength fluorescent dyes including 123, 6G, acceptors, epoxy resin (ER) matrix, dual‐phosphorescence resonance energy transfer system (CDs@Al ‐dye‐ER) constructed rationally regulate emission, conferring full‐color dynamic red at decay times high quantum yields up 48.2%. The fascinating properties ‐dye‐ER composites enable their successful applications multidimensional information encryption polychrome 3D artworks.

Language: Английский

Reversible switching from fluorescence to room temperature phosphorescence amplified by exciton-vibration coupling through pressure-induced tiny packing changes

Chemical Science, Journal Year: 2024, Volume and Issue: 15(34), P. 13930 - 13936

Published: Jan. 1, 2024

The regulation of fluorescence and RTP properties through manipulating exciton–vibration coupling pressure-induced tiny packing changes was realized.

Language: Английский