Rechargeable and LED-activated ZnGa2O4: Cr3+near-infrared persistent luminescence nanoprobes for background-free biodetection

doi:10.1039/c7nr01209h

	Rechargeable and LED-activated ZnGa2O4: Cr3+near-infrared persistent luminescence nanoprobes for background-free biodetection
	Zhou, Zhihao 1,2,3,4; Zheng, Wei 1,4; Kong, Jintao 1; Liu, Yan 1,4; Huang, Ping 1; Zhou, Shanyong 1; Chen, Zhuo 1,4; Shi, Jianlin 3,4; Chen, Xueyuan 1,2,3,4
刊名	Nanoscale
	2017
卷号	9 期号:20 页码:6846-6853
ISSN号	20403364
DOI	10.1039/c7nr01209h
英文摘要	Persistent luminescence nanoparticles (PLNPs) have shown great promise in the field of biomedicine, but are currently limited by the challenge in the synthesis of high-quality PLNPs with bright persistent luminescence and a long afterglow time. Herein, we report a facile strategy for the synthesis of monodisperse, rechargeable and LED-activated ZnGa2O4:Cr3+near-infrared (NIR) PLNPs based on a modified solvothermal liquid-solid-solution method. The as-synthesized PLNPs are not only flexible for bioconjugation, but could also circumvent the limitation of the weak persistent luminescence and short afterglow time that most PLNPs confronted owing to their rechargeable capability. It was unraveled that both thermal activation and quantum tunneling mechanisms contributed to the afterglow decay of the PLNPs, and the quantum tunneling was found to dictate the LED-activated afterglow intensity and lasting time. Furthermore, by utilizing the superior excitation-free persistent luminescence, we demonstrated for the first time the application of biotinylated ZnGa2O4:Cr3+PLNPs as background-free luminescent nano-bioprobes for sensitive and specific detection of avidin in a heterogeneous assay with a limit of detection down to ∼150 pM, thus revealing the great potential of these NIR PLNPs in ultrasensitive biodetection and bioimaging. © 2017 The Royal Society of Chemistry.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25404]
专题	中国科学院上海硅酸盐研究所
作者单位	1.CAS Key Laboratory of Design and Assembly of Functional Nanostructures, Fujian Provincial Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian; 350002, China; 2.School of Physical Science and Technology, Shanghai Tech University, Shanghai; 201210, China; 3.State Key Laboratory of High Performance Ceramic and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 200050, China; 4.University of Chinese Academy of Sciences, Beijing; 100049, China
推荐引用方式 GB/T 7714	Zhou, Zhihao,Zheng, Wei,Kong, Jintao,et al. Rechargeable and LED-activated ZnGa2O4: Cr3+near-infrared persistent luminescence nanoprobes for background-free biodetection[J]. Nanoscale,2017,9(20):6846-6853.
APA	Zhou, Zhihao.,Zheng, Wei.,Kong, Jintao.,Liu, Yan.,Huang, Ping.,...&Chen, Xueyuan.(2017).Rechargeable and LED-activated ZnGa2O4: Cr3+near-infrared persistent luminescence nanoprobes for background-free biodetection.Nanoscale,9(20),6846-6853.
MLA	Zhou, Zhihao,et al."Rechargeable and LED-activated ZnGa2O4: Cr3+near-infrared persistent luminescence nanoprobes for background-free biodetection".Nanoscale 9.20(2017):6846-6853.