Ultraviolet(UV)emitting persistent luminescence(PersL)materials have aroused significant interest,owing to their unique self-illuminating high-photo-energy feature under excitation-free conditions.In particular,the ad...Ultraviolet(UV)emitting persistent luminescence(PersL)materials have aroused significant interest,owing to their unique self-illuminating high-photo-energy feature under excitation-free conditions.In particular,the advent of X-rays as a charging source for UV PersL has facilitated the control of PersL properties and triggered a breakthrough in possible applications such as X-ray imaging techniques,phototherapy,photocatalysis,and optical information storage.Here,we present novel PersL materials that exhibit ultra-long UV emission for over 2000 h,as detected with a spectrometer.Experimental characterization revealed that the intrinsic oxygen vacancies associated with the local structure of the perovskite LaGaO_(3) can function as traps,which have super capabilities in energy collection and storage triggered by X-ray irradiation.Notably,this design concept is guided by utilizing an oxygen-defect perovskite as a host,which can serve as powerful guidance for expediting the discovery of new PersL materials.Moreover,due to excellent UV PersL performances,the proposed photodynamic therapy(PDT)platform LaGaO_(3):Bi,Sb@g-C3N4 demonstrates excellent PDT efficiency in vivo using low-dose X-ray irradiation.Our discovery of this UV PersL material is expected to provide directional solutions and novel perspectives for the development and application of UV luminescence technology.展开更多
基金the Foshan Science and Technology Bureau(Foshan Science and Technology Innovation Project,1920001000150-08)the National Natural Science Foundation of China(52102195)+2 种基金the Joint Funds of the National Natural Science Foundation of China and Yunnan Province(U1902222)the Guangdong Provincial Science&Technology Project(2022A0505050032)the Major Science and Technology Research and Development Project of Jiangxi Province(20223AAE01003)for the financial support。
文摘Ultraviolet(UV)emitting persistent luminescence(PersL)materials have aroused significant interest,owing to their unique self-illuminating high-photo-energy feature under excitation-free conditions.In particular,the advent of X-rays as a charging source for UV PersL has facilitated the control of PersL properties and triggered a breakthrough in possible applications such as X-ray imaging techniques,phototherapy,photocatalysis,and optical information storage.Here,we present novel PersL materials that exhibit ultra-long UV emission for over 2000 h,as detected with a spectrometer.Experimental characterization revealed that the intrinsic oxygen vacancies associated with the local structure of the perovskite LaGaO_(3) can function as traps,which have super capabilities in energy collection and storage triggered by X-ray irradiation.Notably,this design concept is guided by utilizing an oxygen-defect perovskite as a host,which can serve as powerful guidance for expediting the discovery of new PersL materials.Moreover,due to excellent UV PersL performances,the proposed photodynamic therapy(PDT)platform LaGaO_(3):Bi,Sb@g-C3N4 demonstrates excellent PDT efficiency in vivo using low-dose X-ray irradiation.Our discovery of this UV PersL material is expected to provide directional solutions and novel perspectives for the development and application of UV luminescence technology.
