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. 2021 Feb 1;60(5):2398-2405.
doi: 10.1002/anie.202011553. Epub 2020 Dec 1.

pH-Responsive Torpedo-Like Persistent Luminescence Nanoparticles for Autofluorescence-Free Biosensing and High-Level Information Encryption

Juan Li  1   2   3 , Xiaolin Huang  4 , Xu Zhao  1   2   3 , Li-Jian Chen  1   2   3 , Xiu-Ping Yan  1   2   3   5
Affiliations

pH-Responsive Torpedo-Like Persistent Luminescence Nanoparticles for Autofluorescence-Free Biosensing and High-Level Information Encryption

Juan Li et al. Angew Chem Int Ed Engl. .

Abstract

Persistent luminescent nanoparticles (PLNPs) with intrinsic stimuli-responsive properties are desirable because of no autofluorescence background and natural responsive luminescence. However, the stimuli-responsive features of pure PLNPs have been unexplored. Here we show a facile one-pot hydrothermal synthesis of green-emitting Zn2 GeO4 :Mn2+ ,Pr3+ nanoparticles (ZGMP) with regular shape, uniform size and good afterglow luminescent performance. We also report the pH stimuli-responsive luminescent behavior of ZGMP and its possible mechanism. Taking the intriguing feature of pH responsive persistent luminescence, we explore ZGMP as autofluorescence-free probes to achieve stimuli-activated signal switch for biosensing by integrating enzyme catalysis reaction mediated pH modulation. The pH-responsive persistent luminescence also makes ZGMP promising for high-level information encryption.

Keywords: biosensing; information encryption; persistent luminescence; stimuli-responsiveness.

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References

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