Despite great progress in developing mode-selective light emission technologies based on self-emitting materials,few rewritable displays with modeselective multiple light emissions have been demonstrated.Herein,we pre...Despite great progress in developing mode-selective light emission technologies based on self-emitting materials,few rewritable displays with modeselective multiple light emissions have been demonstrated.Herein,we present a rewritable triple-mode light-emitting display enabled by stimuli-interactive fluorescence(FL),room-temperature phosphorescence(RTP),and electroluminescence(EL).The display comprises coplanar electrodes separated by a gap,a polymer composite with FL inorganic phosphors(EL/FL layer),and a polymer composite with solvent-responsive RTP additives(RTP layer).Upon 254 nm UV exposure,a dual-mode emission of RTP and FL occurs from the RTP and EL/FL layers,respectively.When a polar liquid,besides water,is applied on the display and an AC field is applied between the coplanar electrodes,EL from the EL/FL layer is triggered,and the display operates in a triple mode.Interestingly,when water is applied to the display,the RTP mode is deactivated,rendering the display to operate in a dual mode of FL and EL.By manipulating the evaporation of the applied polar liquids and water,the mode-selective light emission of FL,RTP,and EL is rewritable in the triple-mode display.Additionally,a high-security full-color information encryption display is demonstrated,wherein the information of digital numbers,letters,and Morse code encoded in one optical mode is only deciphered when properly matched with that encoded in the other two modes.Thus,this article outlines a strategy to fulfill the substantial demand for high-security personalized information based on room-temperature multi-light-emitting displays.展开更多
Multimodal luminescent materials have garnered significant attention due to their potential applications in multiplexed biosensing,multi-mode temperature sensing,and multidimensional displays.However,achieving high-pe...Multimodal luminescent materials have garnered significant attention due to their potential applications in multiplexed biosensing,multi-mode temperature sensing,and multidimensional displays.However,achieving high-performance simultaneous multimodal luminescence and multifunctionality remains a considerable challenge.In this work,NaNd_(0.7)Gd_(0.3)F_(4):Yb@NaYF_(4):Yb/Er@NaGdF 4:Yb/Tm core@shell@shell upconversion(UC)nanoparticles(NPs)were developed to address this challenge.These UCNPs enable simultaneous multi-mode temperature and organic sensing with enhanced sensitivity.By utilizing temperature-dependent intensity ratio variations of I_(520)/I_(550),I_(697)/I_(650),and I_(697)/I_(475),multi-mode temperature sensing was achieved.The core@shell@shell UCNPs demonstrated a remarkable maximum relative sensitivity of 2.27%/K,which is higher than many previously reported lanthanide-doped UC systems.Moreover,these UCNPs were effectively applied for multi-channel molecular detection under both 980 and 808 nm excitation.The detection limits for methyl orange(MO)and rhodamine B(RhB)dye molecules were as low as 0.48 and 0.57μg/mL,respectively,further demonstrating their superior performance compared to most other lanthanide-doped UC systems reported in the literature.The results emphasize the high potential of these core@shell@shell UCNPs for advanced multi-modal sensing applications,offering promising solutions for areas such as environmental monitoring,biomedical diagnostics,and multi-channel molecular analysis.展开更多
The tunable excitation patterns and emission modes associated with luminescence materials,such as downshifting luminescence(DSL),upconversion luminescence(UCL),and mechanoluminescence(ML)play an important role in info...The tunable excitation patterns and emission modes associated with luminescence materials,such as downshifting luminescence(DSL),upconversion luminescence(UCL),and mechanoluminescence(ML)play an important role in information encryption and anticounterfeiting.However,many reported luminescence materials usually show fixed excitation patterns and unimodal output,resulting in a low anticounterfeiting level.Therefore,developing luminescence materials with multitemporal,variation excitation patterns and multiple emission modes remains a considerable challenge,particularly in a single matrix.This study reports a highly integrated multifunctional material(color-tunable(DSL:amaranth→blue),tunable excitation patterns(250±380 nm)and quadrimodal(DSL,UCL,persistent luminescence(PersL),and ML)).The as-obtained versatile LaCaAl_(3)O_(7):Eu^(2+)/^(3+),Yb^(3+),Er^(3+)materials are suitable for obtaining elastomer films with the characteristics of water resistance,stretchability,and flexibility and synchronously offer multidimensional information encryptions and anticounterfeiting using common tools(ultraviolet light,nearinfrared light,and pen).These results provide a unique insight into advanced multimodal anticounterfeiting.展开更多
基金supported by the Creative Materials Discovery Program through the National Research Foundation of Korea(NRF)funded by the Ministry of Science and ICT(MSIT)(2022M3C1A3081211)This study was also supported by a grant from the NRF funded by MSIT(RS-2023-00208577)+1 种基金This study was financially supported by the Nano&Material Technology Development Program through the NRF funded by MSIT(RS-2024-00451891 and RS-2024-00416938)by the Open Resource Research Program of the Korea Institute of Science and Technology(2E32961).
文摘Despite great progress in developing mode-selective light emission technologies based on self-emitting materials,few rewritable displays with modeselective multiple light emissions have been demonstrated.Herein,we present a rewritable triple-mode light-emitting display enabled by stimuli-interactive fluorescence(FL),room-temperature phosphorescence(RTP),and electroluminescence(EL).The display comprises coplanar electrodes separated by a gap,a polymer composite with FL inorganic phosphors(EL/FL layer),and a polymer composite with solvent-responsive RTP additives(RTP layer).Upon 254 nm UV exposure,a dual-mode emission of RTP and FL occurs from the RTP and EL/FL layers,respectively.When a polar liquid,besides water,is applied on the display and an AC field is applied between the coplanar electrodes,EL from the EL/FL layer is triggered,and the display operates in a triple mode.Interestingly,when water is applied to the display,the RTP mode is deactivated,rendering the display to operate in a dual mode of FL and EL.By manipulating the evaporation of the applied polar liquids and water,the mode-selective light emission of FL,RTP,and EL is rewritable in the triple-mode display.Additionally,a high-security full-color information encryption display is demonstrated,wherein the information of digital numbers,letters,and Morse code encoded in one optical mode is only deciphered when properly matched with that encoded in the other two modes.Thus,this article outlines a strategy to fulfill the substantial demand for high-security personalized information based on room-temperature multi-light-emitting displays.
基金supported by the National Natural Science Foundation of China(62475248,52172164)Fundamental Research Funds for the Provincial Universities of Zhejiang(2023YW72,2023YW101).
文摘Multimodal luminescent materials have garnered significant attention due to their potential applications in multiplexed biosensing,multi-mode temperature sensing,and multidimensional displays.However,achieving high-performance simultaneous multimodal luminescence and multifunctionality remains a considerable challenge.In this work,NaNd_(0.7)Gd_(0.3)F_(4):Yb@NaYF_(4):Yb/Er@NaGdF 4:Yb/Tm core@shell@shell upconversion(UC)nanoparticles(NPs)were developed to address this challenge.These UCNPs enable simultaneous multi-mode temperature and organic sensing with enhanced sensitivity.By utilizing temperature-dependent intensity ratio variations of I_(520)/I_(550),I_(697)/I_(650),and I_(697)/I_(475),multi-mode temperature sensing was achieved.The core@shell@shell UCNPs demonstrated a remarkable maximum relative sensitivity of 2.27%/K,which is higher than many previously reported lanthanide-doped UC systems.Moreover,these UCNPs were effectively applied for multi-channel molecular detection under both 980 and 808 nm excitation.The detection limits for methyl orange(MO)and rhodamine B(RhB)dye molecules were as low as 0.48 and 0.57μg/mL,respectively,further demonstrating their superior performance compared to most other lanthanide-doped UC systems reported in the literature.The results emphasize the high potential of these core@shell@shell UCNPs for advanced multi-modal sensing applications,offering promising solutions for areas such as environmental monitoring,biomedical diagnostics,and multi-channel molecular analysis.
基金supported by the National Natural Science Foundation of China(21871122 and 21431002)the Fundamental Research Funds for the Central Universities(lzujbky-2021-kb17)。
文摘The tunable excitation patterns and emission modes associated with luminescence materials,such as downshifting luminescence(DSL),upconversion luminescence(UCL),and mechanoluminescence(ML)play an important role in information encryption and anticounterfeiting.However,many reported luminescence materials usually show fixed excitation patterns and unimodal output,resulting in a low anticounterfeiting level.Therefore,developing luminescence materials with multitemporal,variation excitation patterns and multiple emission modes remains a considerable challenge,particularly in a single matrix.This study reports a highly integrated multifunctional material(color-tunable(DSL:amaranth→blue),tunable excitation patterns(250±380 nm)and quadrimodal(DSL,UCL,persistent luminescence(PersL),and ML)).The as-obtained versatile LaCaAl_(3)O_(7):Eu^(2+)/^(3+),Yb^(3+),Er^(3+)materials are suitable for obtaining elastomer films with the characteristics of water resistance,stretchability,and flexibility and synchronously offer multidimensional information encryptions and anticounterfeiting using common tools(ultraviolet light,nearinfrared light,and pen).These results provide a unique insight into advanced multimodal anticounterfeiting.
