Water-Responsive Fluorescence and Room-Temperature Phosphorescence Carbon Dots for Trace Water Detection in Ethylene Glycol and Multimodal Anticounterfeiting DOI
Li Yang,

Yong Wei Jin,

Zhihui Xu

et al.

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

Published: April 30, 2025

Identifying trace water in ethylene glycol is essential for maintaining stringent quality control chemical processes and ensuring product purity. However, the development of highly sensitive detection methods aqueous impurities within this viscous solvent presents significant challenges, primarily arising from strong intermolecular hydrogen bonding network glycol, which not only masks presence but also interferes with conventional analytical techniques. This work introduces a novel fluorescence-based method that combines simplicity, efficiency, rapid response by leveraging water-responsive carbon dots (CDs). Specifically, we synthesized (WCDs) exhibit enhanced fluorescence anhydrous glycol. Notably, introduction induces concentration-dependent enhancement at 394 nm, establishing linear correlation 0-0.284% (v/v) content range (detection limit: 0.017%, 3σ/S) remarkably low. By exploiting between WCDs cellulose paper matrices, triplet excited states are effectively stabilized, thereby enabling green room-temperature phosphorescence (RTP) emission. enables precise modulation WCDs' aggregation-dispersion through controlled water/ethanol addition, mechanism drives stimulus-responsive transitions RTP. These tunable optical properties validate create new opportunities developing dual-mode dynamic anticounterfeiting technologies.

Language: Английский

Cellulose as Source and Matrix for Fluorescent Chemo-Sensors DOI

Sicily Rilu Joseph,

Jith C. Janardhanan, Sithara Radhakrishnan

et al.

Journal of Fluorescence, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 24, 2025

Language: Английский

Citations

0
Water-Responsive Fluorescence and Room-Temperature Phosphorescence Carbon Dots for Trace Water Detection in Ethylene Glycol and Multimodal Anticounterfeiting DOI
Li Yang,

Yong Wei Jin,

Zhihui Xu

et al.

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

Published: April 30, 2025

Identifying trace water in ethylene glycol is essential for maintaining stringent quality control chemical processes and ensuring product purity. However, the development of highly sensitive detection methods aqueous impurities within this viscous solvent presents significant challenges, primarily arising from strong intermolecular hydrogen bonding network glycol, which not only masks presence but also interferes with conventional analytical techniques. This work introduces a novel fluorescence-based method that combines simplicity, efficiency, rapid response by leveraging water-responsive carbon dots (CDs). Specifically, we synthesized (WCDs) exhibit enhanced fluorescence anhydrous glycol. Notably, introduction induces concentration-dependent enhancement at 394 nm, establishing linear correlation 0-0.284% (v/v) content range (detection limit: 0.017%, 3σ/S) remarkably low. By exploiting between WCDs cellulose paper matrices, triplet excited states are effectively stabilized, thereby enabling green room-temperature phosphorescence (RTP) emission. enables precise modulation WCDs' aggregation-dispersion through controlled water/ethanol addition, mechanism drives stimulus-responsive transitions RTP. These tunable optical properties validate create new opportunities developing dual-mode dynamic anticounterfeiting technologies.

Language: Английский

Citations

0