title: Hybrid coordination-network-engineering for bridging cascaded channels to activate long persistent phosphorescence in the second biological window.
abstract: We present a novel "Top-down" strategy to design the long phosphorescent phosphors in the second biological transparency window via energy transfer. Inherence in this approach to material design involves an ingenious engineering for hybridizing the coordination networks of hosts, tailoring the topochemical configuration of dopants, and bridging a cascaded tunnel for transferring the persistent energy from traps, to sensitizers and then to acceptors. Another significance of this endeavour is to highlight a rational scheme for functionally important hosts and dopants, Cr/Nd co-doped Zn1-xCaxGa2O4 solid solutions. Such solid-solution is employed as an optimized host to take advantage of its characteristic trap site level to establish an electron reservoir and network parameters for the precipitation of activators Nd(3+) and Cr(3+). The results reveal that the strategy employed here has the great potential, as well as opens new opportunities for future new-wavelength, NIR phosphorescent phosphors fabrication with many potential multifunctional bio-imaging applications.
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors: Xixi
authors: X
authors: Qin
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.|School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China.
authors: Yang
authors: Y
authors: Li
authors: Shanghai institute of optics and fine mechanics, Chinese Academy of Sciences 201800, China.
authors: Ruili
authors: R
authors: Zhang
authors: Shanghai institute of optics and fine mechanics, Chinese Academy of Sciences 201800, China.
authors: Jinjun
authors: J
authors: Ren
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors: Mindaugas
authors: M
authors: Gecevicius
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors: Yiling
authors: Y
authors: Wu
authors: Escola de Engenharia de Sao Carlos, Universidade de Sao Paulo, 13566-590, Sao Carlos, SP, Brazil.
authors: Kaniyarakkal
authors: K
authors: Sharafudeen
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors: Guoping
authors: G
authors: Dong
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors: Shifeng
authors: S
authors: Zhou
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors: Zhijun
authors: Z
authors: Ma
authors: State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Fiber Laser Materials and Applied Techniques, South China University of Technology, Guangzhou 510640, China.
authors: Jianrong
authors: J
authors: Qiu