.png){kind=icon}
.png){kind=icon}
Return
Transfer of Luminescent Radicals to the Aqueous Phase by Polymerization in a Miniemulsion
.png){kind=icon}
PRE
AI
Z
Z
K
DOI：10.1002/adom.71609.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Luminescent radicals have recently emerged as a new class of open-shell emitters with unique excited-state properties and theoretical potential for 100% internal quantum efficiency. However, their application in aqueous environments and biological imaging remains severely limited by poor water dispersibility and aggregation-induced quenching. Herein, we report an efficient strategy to transfer red-emissive tris(2,4,6-trichlorophenyl) methyl (TTM) based luminescent radicals into the aqueous phase via redox polymerization in a miniemulsion. A series of heterocyclic donor-substituted TTM radicals were synthesized and systematically investigated. By encapsulating the radicals in poly(methyl methacrylate) (PMMA) latex particles, stable water-dispersible luminescent radical miniemulsions were obtained. Notably, the aqueous radical-loaded miniemulsion exhibits a photoluminescence quantum yield of 37.6%, which is significantly higher than that of the corresponding radical solution (7.5%), owing to the rigid microenvironment within the polymer matrix. The resulting miniemulsion particles display uniform size distribution, long-term stability, and bright red emission in water. Furthermore, in vivo imaging experiments demonstrate that the luminescent radical miniemulsion enables stable red fluorescence in living mice. This work provides a general and facile approach for constructing water-dispersible luminescent radical materials and opens new opportunities for their applications in bioimaging and aqueous photonic systems.
Keywords:
bioimaging
doublet state
luminescent radicals
miniemulsion
stable radicals
Journal
IF:
7.2
Papers:
8.6K
Citations:
4.6W
Organization
Cited Papers