Hybrid organic–inorganic piezoelectric materials,characterized by their tunable structure and inherent mechanical flexibility,are garnering significant attention for their potential applications in electronic sensors...Hybrid organic–inorganic piezoelectric materials,characterized by their tunable structure and inherent mechanical flexibility,are garnering significant attention for their potential applications in electronic sensors and devices.Herein,we introduce a pair of Fe(Ⅱ)-incorporated hybrid enantiomeric piezoelectric materials,designed as(R/S-3-hydroxyquinuclidium)₂FeCl₄[(R/S-HQ)₂FeCl₄].The enantiomers show a piezoelectric coefficient(d₃₃)of 21 pC N⁻¹and a high piezoelectric voltage coefficient(g₃₃)of 408×10⁻³V m N⁻¹,surpassing that of the conventional piezoelectric polymer PVDF.Additionally,(R/S-HQ)₂FeCl₄demonstrates significant dielectric permittivity switching and excellent cycling stability.Moreover,in a piezoelectric generation device,this material produces a peak-to-peak output voltage of approximately 2.0 V and shows a small deviation of only±0.1 V after 60 days,confirming its long-term excellent output stability.This work highlights its considerable potential for integration into self-powered low-voltage electronic devices and energy harvesting systems.展开更多
Optical spectroscopy is crucial for understanding the optical properties of materials,characterizing the performance of photonic devices,and monitoring industrial processes based on spectral detection[1–3].However,co...Optical spectroscopy is crucial for understanding the optical properties of materials,characterizing the performance of photonic devices,and monitoring industrial processes based on spectral detection[1–3].However,commercial spectrometers often involve intricate optical setups and have substantial physical dimensions,especially for spectrometers with high precision.Consequently,there is a motivation to develop miniaturized spectrometers with increasement in portability and environmental robustness,which will broaden the scope of information acquisition in both scientific research and industrial applications[4].展开更多
Diradicaloids have garnered significant attention due to their unique electronic,photophysical properties and potential applications in functional materials.Characterized by a narrow band gap and near-infrared(NIR)abs...Diradicaloids have garnered significant attention due to their unique electronic,photophysical properties and potential applications in functional materials.Characterized by a narrow band gap and near-infrared(NIR)absorption,diradicaloids are promising candidates for NIR-guided photothermal therapy.However,they are often unstable and exhibit non-emissive properties due to high chemical reactivity and very efficient internal conversion.Herein,we report a remarkably stable Chichibabin diradicaloid,TT-CzPh,which exhibits NIR luminescence(λ_(em)=821 nm)with an efficient photoluminescence quantum yield(PLQY)of 6.4%.Surprisingly,TT-CzPh not only exhibits excellent NIR imaging but also has a very high photothermal conversion efficiency(PCE)of 87.5%.In vivo experiments with TT-CzPh nanoparticles demonstrated their effectiveness in tumor photoablation guided by NIR imaging.This work not only advances the development of stable,efficient luminescent Chichibabin’s hydrocarbons but also opens new avenues for bioimaging and cancer phototherapy applications.展开更多
基金supported by the National Natural Science Foundation of China(22271131).
文摘Hybrid organic–inorganic piezoelectric materials,characterized by their tunable structure and inherent mechanical flexibility,are garnering significant attention for their potential applications in electronic sensors and devices.Herein,we introduce a pair of Fe(Ⅱ)-incorporated hybrid enantiomeric piezoelectric materials,designed as(R/S-3-hydroxyquinuclidium)₂FeCl₄[(R/S-HQ)₂FeCl₄].The enantiomers show a piezoelectric coefficient(d₃₃)of 21 pC N⁻¹and a high piezoelectric voltage coefficient(g₃₃)of 408×10⁻³V m N⁻¹,surpassing that of the conventional piezoelectric polymer PVDF.Additionally,(R/S-HQ)₂FeCl₄demonstrates significant dielectric permittivity switching and excellent cycling stability.Moreover,in a piezoelectric generation device,this material produces a peak-to-peak output voltage of approximately 2.0 V and shows a small deviation of only±0.1 V after 60 days,confirming its long-term excellent output stability.This work highlights its considerable potential for integration into self-powered low-voltage electronic devices and energy harvesting systems.
基金supported by the National Key Research and Development Program of China(2021YFA1400800)the Quantum Science Strategic Initiative(GDZX2206001 and GDZX2306003)+2 种基金the Natural Science Foundation of Guangdong Province(2022B1515020067 and 2024B1515040013)the Postdoctoral Fellowship Program of CPSF(GZB20240909)the China Postdoctoral Science Foundation(2024M763733)。
文摘Optical spectroscopy is crucial for understanding the optical properties of materials,characterizing the performance of photonic devices,and monitoring industrial processes based on spectral detection[1–3].However,commercial spectrometers often involve intricate optical setups and have substantial physical dimensions,especially for spectrometers with high precision.Consequently,there is a motivation to develop miniaturized spectrometers with increasement in portability and environmental robustness,which will broaden the scope of information acquisition in both scientific research and industrial applications[4].
基金supported by the National Key R&D Program of China(No.2023YFB3208303)the National Natural Science Foundation of China(Grant Nos.62422404,62171194,52103210)the Natural Science Foundation of Jilin Province(No.20230101363JC).
文摘Diradicaloids have garnered significant attention due to their unique electronic,photophysical properties and potential applications in functional materials.Characterized by a narrow band gap and near-infrared(NIR)absorption,diradicaloids are promising candidates for NIR-guided photothermal therapy.However,they are often unstable and exhibit non-emissive properties due to high chemical reactivity and very efficient internal conversion.Herein,we report a remarkably stable Chichibabin diradicaloid,TT-CzPh,which exhibits NIR luminescence(λ_(em)=821 nm)with an efficient photoluminescence quantum yield(PLQY)of 6.4%.Surprisingly,TT-CzPh not only exhibits excellent NIR imaging but also has a very high photothermal conversion efficiency(PCE)of 87.5%.In vivo experiments with TT-CzPh nanoparticles demonstrated their effectiveness in tumor photoablation guided by NIR imaging.This work not only advances the development of stable,efficient luminescent Chichibabin’s hydrocarbons but also opens new avenues for bioimaging and cancer phototherapy applications.
