Up‐Conversion Fluorescent Labels for Plastic Recycling: A Review
Source abstract
Abstract
The demand for more efficient and complete sorting techniques for plastic waste is growing, and one possible solution isbased on fluorescent labeling. Novel fluorescent labels based on trivalent lanthanide (Ln3+) activated inorganic up‐conversion (UC) materials offer a promising technological solution for plastic recycling. UC is a nonlinear, anti‐Stokes process of combining two or more low energy near‐infrared (NIR) photons to obtain the emission of a single higher energy photon. While Ln3+ based UC materials possess one key disadvantage –low quantum yield, they also exhibit many unique features, such as high signal/noise ratio, tailored emission color, long photo‐luminescent lifetime, and low toxicity. These unique features endear them for a diverse range of applications and offer many new opportunities. Herein, we review the recent advances in the Ln3+ activated inorganic micro‐sized UC materials from the perspective of tailoring UC emission color and intensity for plastic recycling applications.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Nanoplatforms for cancer theranostics · Luminescence and Fluorescent Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Microstructure Technology Karlsruhe Institute of Technology Hermann‐von‐Helmholtz‐Platz 1 76344 Eggenstein‐Leopoldshafen Germany
Light Technology Institute Karlsruhe Institute of Technology Engesserstraße 13 76131 Karlsruhe Germany
Funding
Helmholtz-Gemeinschaft
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