Programmable wavelength- and time-dependent multicolor afterglow in polyvinyl alcohol via synergistic ion-bridging and crosslinking interactions
Abstract
-associated microdomains, together with the pre-existing crosslinked domains, cooperatively generate emissive centers to form dynamic phosphorescent polymers. As a result, the initially static single-color afterglow evolves into wavelength- and time-dependent dynamic multicolor afterglow maintaining an ultralong RTP lifetime of 1.06 s. Notably, by tuning the excitation wavelengths within a narrow 15 nm window (385-400 nm), the afterglow can be modulated over more than 100 nm (460-563 nm), affording a distinct color evolution from yellow-green to cyan to blue. This work provides a practical framework for achieving wavelength/time regulation of dynamic multicolor afterglow in host-guest systems and offers a visual platform for accurate energy discrimination, with promising potential in multilevel information encryption and optoelectronic applications.
Fields of Study & Subjects
Luminescence and Fluorescent Materials
Image Enhancement Techniques
Photochromic and Fluorescence Chemistry
Publication details
- Journal / source
- Chemical Science
- Publisher
- Royal Society of Chemistry (RSC)
- Volume
- 17
- Issue
- 21
- Pages
- 10469–10478
- Publication date
- 1 January 2026
- Language
- EN