Enhancement of long-lived luminescence in nanophosphors by surface defect passivation

Linna Fu; Jie Wang; Na Chen; Qinqin Ma; Danqing Lu; Quan Yuan

doi:10.1039/d0cc02658a

Enhancement of long-lived luminescence in nanophosphors by surface defect passivation

Chem Commun (Camb). 2020 Jun 18;56(49):6660-6663. doi: 10.1039/d0cc02658a.

Authors

Linna Fu¹, Jie Wang², Na Chen³, Qinqin Ma³, Danqing Lu⁴, Quan Yuan²

Affiliations

¹ Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China. yuanquan@whu.edu.cn.
² Institute of Chemical Biology and Nanomedicine, State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China. yuanquan@whu.edu.cn and Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
³ Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.
⁴ School of Science, Central South University of Forestry and Technology, Changsha 410004, China.

PMID: 32409793
DOI: 10.1039/d0cc02658a

Abstract

Herein, we found that surface defects quench persistent luminescence in nanophosphors. Passivation of surface defects by thermal treatment or surface coating can effectively enhance the intensity and prolong the decay time of persistent luminescence. The surface passivated persistent nanophosphors are promising in autofluorescence-free bioimaging and time-gated steganography.