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Catch and relay: brighter near-infrared photoluminescence in lanthanide-based nanoparticles
Liyan Ming1, Riccardo Marin2,3
1Intelligent Optical Nanomaterials (IONs) Lab, Departamento de Quimica Organica, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain.
Abstract:
A design strategy for NIR-emitting lanthanide nanoparticles resolves the fundamental tension between core-shell passivation and dye sensitization. By engineering a Yb³⁺-doped interlayer as an active energy relay between surface-bound ICG and an heavily Er³⁺-doped core, a ~ 2000-fold brightness enhancement is achieved, enabling high-contrast in vivo vascular imaging.
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