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Consistent exposure to 17β-estradiol through drinking water and food can cause health problems. Although many simple and sensitive fluorescence sensors of 17β-estradiol have been reported, most of them are based on fluorescence quenching test mode working in visible light range, which are inferior in anti-interference ability and quantitative range. Here, we developed a near-infrared (NIR) phosphorescence aptasensor for the detection of 17β-estradiol that has no background fluorescence. The aptasensor was based on Foster resonance energy transfer (FRET) between aptamer conjugated NIR persistent luminescence nanoparticles (PLNPs-Apt) and MoS 2 nanosheets. The 17β-estradiol was quantified by the recovery of PLNPs' phosphorescence. This assay can detect 17β-estradiol in 0.5 mL samples with the LOD of 0.29 ng mL -1 and in concentrations of more than three orders of magnitude (from 0.5 ng mL -1 to 1.2 μg mL -1 ). This aptasensor exhibited selectivity for 17β-estradiol and was applicable in complex milk samples., (Copyright © 2021 Elsevier Ltd. All rights reserved.)

We report 808 nm NIR light renewable NIR persistent luminescence sensitized photodynamic therapy (PDT). Persistent luminescence provides an internal light source to generate singlet oxygen for PDT. This work paves the way for the next generation of PDT without any need for continuous external light irradiation.

The introduction of co‐dopants is one of the effective ways to improve the luminescence properties of the persistent luminescence nanoparticles (PLNPs). Herein, Cr3+, Ca2+ co‐doped and Cr3+, Ca2+, Pr3+ tri‐doped β‐Ga2O3 PLNPs with enhanced persistent luminescence were developed via the hydrothermal synthesis and subsequent calcinations, which improved the persistent luminescence of the β‐Ga2O3 PLNPs. The results showed that the prepared PLNPs had a long afterglow time of more than 8 days with a signal‐to‐noise ratio (SNR) of 272 and the Quantum yield (QY) up to 74.8 %, which was renewable by LED lamps and stored information under a high‐temperature environment. The synthesized β‐Ga2O3:Cr3+, Ca2+, Pr3+ PLNPs with long afterglow time showed great potentials in optical storage. [ABSTRACT FROM AUTHOR]

[Display omitted] • Comprehensive summary of spinel-type persistent luminescence nanoparticles. • Introdction of their emission mechanism. • Discussion of their sythesis methods. • Summarization of their application. • Proposing their challenges and outlooks. Spinel-structure persistent luminescence nanoparticles (SS-PLNPs) have attracted considerable interest due to their magical afterglow emission. SS-PLNPs constitute spinel host, emission center, and trap, while the host is the carrier of trap and emission center. The inherent defects of spinel host can store and release charge carriers for persistent luminescence, while the introduction of emission center enriches their optical properties greatly. Trap captures charge carriers, which are stored and then released gradually to produce the afterglow emission. Besides the unique afterglow emission, SS-PLNPs exhibit abundant composites, various energy transfer mechanisms, and tunable optical properties. Thus, they are extensively applied in various fields, including but not limiting sensing, biomedicine, information recognition, photocatalysis, and solar cell. This review summarizes the emission mechanisms, synthesis methods, compositions, and applications of SS-PLNPs in depth. The challenges related to SS-PLNPs are also discussed. [ABSTRACT FROM AUTHOR]