Enhanced Room‐Temperature Phosphorescence in Delignified Wood Through Combination with Pyrene‐Based Materials

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

Published: April 17, 2025

Abstract Organic room‐temperature phosphorescent (RTP) materials, featured by their large Stokes shifts and long lifetimes, have garnered significant attention due to promising applications in biophotonics optoelectronics. However, the instability of triplet states proneness quenching aerobic, environments pose challenges. Herein, delignified wood (DW) is used as a porous substrate applied heat drive dehydration condensation between cellulose/hemicellulose hydroxyls chromophore 1‐pyrenylboronic acid (Py‐BOH). This reaction forms B─O bonds, anchoring Py‐BOH rigid microenvironment created hydrogenbonding DW pores, which restricts molecular thermal motion facilitates RTP emission, resulting lifetime 340 ms for target RTP‐DW film. Furthermore, susceptibility cellulose hydrogen‐bond network disruption water molecules, film sensitive exhibits repeatable stimulus‐responsive behavior under water/thermal stimulation. material can be processed into various luminous objects directly cutting different shapes or grinding it powder compounding with polymers, thereby holding potential indication anti‐counterfeiting. The successful preparation this (room‐temperature phosphorescent‐delignified wood)RTP‐DW will provide an effective pathway achieving high‐value utilization resources.

Language: Английский

A universal strategy to construct water-stimuli-responsive organic Long-persistent luminescence films for in-situ leak detection

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158626 - 158626

Published: Dec. 1, 2024

Language: Английский