Intelligent stimuli-responsive fluorescence materials are extremely pivotal for fabricating luminescent turn-on switching in solid-state photonic integration technology,but it remains a challenging objective for typic...Intelligent stimuli-responsive fluorescence materials are extremely pivotal for fabricating luminescent turn-on switching in solid-state photonic integration technology,but it remains a challenging objective for typical 3-dimensional(3D)perovskite nanocrystals.Herein,by fine-tuning the accumulation modes of metal halide components to dynamically control the carrier characteristics,a novel triple-mode photoluminescence(PL)switching was realized in 0D metal halide through stepwise single-crystal to single-crystal(SC-SC)transformation.Specifically,a family of 0D hybrid antimony halides was designed to exhibit three distinct types of PL performance including nonluminescent[Ph_(3)EtP]_(2)Sb_(2)Cl_(8)(1),yellowemissive[Ph3EtP]2SbCl5·EtOH(2),and red-emissive[Ph_(3)EtP]_(2)SbCl_(5)(3).Upon stimulus of ethanol,1 was successfully converted to 2 through SC-SC transformation with enhanced PL quantum yield from~0%to 91.50%acting as“turn-on”luminescent switching.Meanwhile,reversible SC-SC and luminescence transformation between 2 and 3 can be also achieved in the ethanol impregnation-heating process as luminescence vapochromism switching.As a consequence,a new triple-model turn-on and coloradjustable luminescent switching of off-onI-onII was realized in 0D hybrid halides.Simultaneously,wide advanced applications were also achieved in anti-counterfeiting,information security,and optical logic gates.This novel photon engineering strategy is expected to deepen the understanding of dynamic PL switching mechanism and guide development of new smart luminescence materials in cutting-edge optical switchable device.展开更多
基金This work was supported by the National Natural Sci-ence Foundation of China(22171105)Shandong Provincial Natural Science Foundation(ZR2020KB012,ZR2021MB001,and ZR2022YQ14)+1 种基金Fund of state key laboratory of structural chemistry(20210015)Special Foundation of Taishan Scholar Project。
文摘Intelligent stimuli-responsive fluorescence materials are extremely pivotal for fabricating luminescent turn-on switching in solid-state photonic integration technology,but it remains a challenging objective for typical 3-dimensional(3D)perovskite nanocrystals.Herein,by fine-tuning the accumulation modes of metal halide components to dynamically control the carrier characteristics,a novel triple-mode photoluminescence(PL)switching was realized in 0D metal halide through stepwise single-crystal to single-crystal(SC-SC)transformation.Specifically,a family of 0D hybrid antimony halides was designed to exhibit three distinct types of PL performance including nonluminescent[Ph_(3)EtP]_(2)Sb_(2)Cl_(8)(1),yellowemissive[Ph3EtP]2SbCl5·EtOH(2),and red-emissive[Ph_(3)EtP]_(2)SbCl_(5)(3).Upon stimulus of ethanol,1 was successfully converted to 2 through SC-SC transformation with enhanced PL quantum yield from~0%to 91.50%acting as“turn-on”luminescent switching.Meanwhile,reversible SC-SC and luminescence transformation between 2 and 3 can be also achieved in the ethanol impregnation-heating process as luminescence vapochromism switching.As a consequence,a new triple-model turn-on and coloradjustable luminescent switching of off-onI-onII was realized in 0D hybrid halides.Simultaneously,wide advanced applications were also achieved in anti-counterfeiting,information security,and optical logic gates.This novel photon engineering strategy is expected to deepen the understanding of dynamic PL switching mechanism and guide development of new smart luminescence materials in cutting-edge optical switchable device.
