Cosolvent-Mediated Carbon Dots Aggregation in Microgel Microenvironments for Multicolor Dynamic Fluorescence Modulation.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 41640291.
- Also identified by DOI 10.1021/acs.nanolett.5c06050.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Dynamic fluorescent materials are attractive for tunable emission colors, but most multicolor systems are limited by a few switching states and complex modulation. To address these challenges, a composite system (MG-CDs) was designed by embedding aggregation-induced color-tuning carbon dots (CDs) into microgels. When respectively swollen in water (H<sub>2</sub>O), ethanol (EtOH), or ethylene glycol (EG), MG-CDs formed distinct internal hydrogen-bonding networks, yielding varied CDs aggregation states and fluorescence emissions. In an H<sub>2</sub>O-EtOH-EG cosolvent, MG-CDs established more complex hydrogen-bonding networks and heating-induced solvent volatilization driven hydrogen-bonds reorganization, which simultaneously tuned the CDs aggregation and polymer conformations, endowing diverse thermo-responsive fluorescence transitions and multiple programmable emission states within a unitary system. This mechanism highlighted that coupling solvent-responsive hydrogen-bond regulation in polymer microenvironments with emitter aggregation enables tunable dynamic fluorescence.Furthermore, MG-CDs were used as inks in which a cosolvent treatment and heating-driven printed patterns were used from monochromatic to polychromatic, achieving programmable color evolution for information storage.