Organic antimony halides show high photoluminescence quantum yield(PLQY)due to their compositional and structural tunability,which provides the possibility for developing high quantum yield scintillators.Herein two an...Organic antimony halides show high photoluminescence quantum yield(PLQY)due to their compositional and structural tunability,which provides the possibility for developing high quantum yield scintillators.Herein two antimony halides with the general formulae(NYP)_(2)SbCl_(5)and(NYP)_(2)Sb_(2)Cl_(8)(NYP=(naphthalene-1-ylmethyl)triphenylphosphine chloride,C_(29)H_(24)PCl)were successfully synthesized.The(NYP)_(2)Sb_(2)Cl_(8)compound assumes a seesaw dimer[Sb_(2)Cl_(8)]^(2−)geometry,with the highest PLQY value of 19.34%among all known Sb_(2)Cl_(8)-types.The(NYP)_(2)SbCl_(5)compound assumes a square pyramidal[SbCl_(5)]^(2−)geometry with a PLQY of approximately 75.07%.Furthermore,both components exhibit remarkable thermal and air stability.Under X-ray excitation,the high photo-quantum yield and negligible self-absorption enable(NYP)_(2)SbCl_(5)to exhibit impressive scintillation performance.Its light yield is approximately 21500 photons per MeV and its detection limit is as low as 757.51 nGyair s^(−1).The flexible scintillation screen of(NYP)_(2)SbCl_(5)enables a high X-ray imaging resolution of 7.77 lp mm^(−1)with great potential in practical X-ray imaging applications.This study not only reveals the correlation between the high-performance luminescence properties and crystal structure of organic antimony halides but also underscores the promising application prospects of the materials in the field of radiation detection.展开更多
基金supported by the National Natural Science Foundation of China(62375032 and 61975023)the Natural Science Foundation of Chongqing(No.CSTB2023TIADKPX0017 and CSTB2022NSCQ-MSX0360)+3 种基金the Open Fund of the State Key Laboratory of High Field Laser Physics(Shanghai Institute of Optics and Fine Mechanics),Chongqing Technology Innovation and Application Development Project Grant(cstc2021jscxgksbX0056)the Fundamental Research Funds for the Central Universities(2023CDJKYJH085)University Postgraduate Programme(GDYKC202406)the China Postdoctoral Science Foundation(Grant Number:BX20230355).
文摘Organic antimony halides show high photoluminescence quantum yield(PLQY)due to their compositional and structural tunability,which provides the possibility for developing high quantum yield scintillators.Herein two antimony halides with the general formulae(NYP)_(2)SbCl_(5)and(NYP)_(2)Sb_(2)Cl_(8)(NYP=(naphthalene-1-ylmethyl)triphenylphosphine chloride,C_(29)H_(24)PCl)were successfully synthesized.The(NYP)_(2)Sb_(2)Cl_(8)compound assumes a seesaw dimer[Sb_(2)Cl_(8)]^(2−)geometry,with the highest PLQY value of 19.34%among all known Sb_(2)Cl_(8)-types.The(NYP)_(2)SbCl_(5)compound assumes a square pyramidal[SbCl_(5)]^(2−)geometry with a PLQY of approximately 75.07%.Furthermore,both components exhibit remarkable thermal and air stability.Under X-ray excitation,the high photo-quantum yield and negligible self-absorption enable(NYP)_(2)SbCl_(5)to exhibit impressive scintillation performance.Its light yield is approximately 21500 photons per MeV and its detection limit is as low as 757.51 nGyair s^(−1).The flexible scintillation screen of(NYP)_(2)SbCl_(5)enables a high X-ray imaging resolution of 7.77 lp mm^(−1)with great potential in practical X-ray imaging applications.This study not only reveals the correlation between the high-performance luminescence properties and crystal structure of organic antimony halides but also underscores the promising application prospects of the materials in the field of radiation detection.
