| Autor: |
Zhang, Lin, Li, Yantao, Ye, Huiru, Zhao, Lei, Song, Qingwei, Du, Weidong, Chen, Xukai, Wei, Wei |
| Předmět: |
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| Zdroj: |
Chemical Communications; 4/30/2023, Vol. 59 Issue 34, p5118-5121, 4p |
| Abstrakt: |
Luminescence concentration quenching exists widely in lanthanide-doped luminescent nanomaterials, and significantly hinders their emission intensity. In this work, we report the concentration-quenching-free properties of the 406 nm emission in Pr3+-doped nanoscintillators, which is attributed to the large energy gap between the 1S0 and 1I6 states (ΔE = ∼25 000 cm−1) of Pr3+ ions, preventing the concentration quenching effects caused by both cross-relaxation and energy migration to surface quenchers. This work provides further understanding about the concentration quenching effect of lanthanide-doped luminescent nanomaterials and a new perspective for avoiding detrimental concentration quenching. In addition, we also demonstrate the potential use of Pr3+-doped nanoscintillators as anti-counterfeiting materials. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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