The organic fluorescent probes were widely explored for specific detection of chemical nerve agent simulants.However,the fluorescence quenching,long-time response,and limitation of detection further impeded their prac...The organic fluorescent probes were widely explored for specific detection of chemical nerve agent simulants.However,the fluorescence quenching,long-time response,and limitation of detection further impeded their practical applications.Herein,the fluorescent nanofiber chitosan-1 was prepared through the modification of chitosan with 1,8-naphthalimide as fluorophore and piperazine as the detection segment.The high specific surface of fluorescent nanofiber chitosan-1 showed ultrasensitive and selective detection of diethyl chlorophosphate(DCP)in solution and vapor.The satisfied linear relationship between the fluorescent intensity and the concentration of DCP ranging from 0μmol/L to 100μmol/L was obtained.The limitation of detection was measured as low as 2.2 nmol/L within 30 s.The sensing mechanism was explored through the photoinduced electron transfer(PET)mechanism which was confirmed by ^(1)H,^(31)P NMR,and mass spectra(MS).The ultrasensitive detection of nanofibers may provide valuable insights for enhancing the sensing performance in visually detecting chemical nerve agents.展开更多
Fluorescent carbon dots(CDs) are admirable nanomaterials due to their superior optical properties and low cost.However,regulation of the emission colors in CDs for lighting device still remains a challenge.In this wor...Fluorescent carbon dots(CDs) are admirable nanomaterials due to their superior optical properties and low cost.However,regulation of the emission colors in CDs for lighting device still remains a challenge.In this work,we developed a green hydrothermal method to obtain three emission colors of CDs using L-tyrosine(for blue CDs),o-phenylendiamine(for green CDs) and L-tyrosine/o-phenylendiamine mixture(for orange-red CDs).These CDs possess good water dispersibility,strong emission with high quantum yields,and excellent photostability.Furthermore,the resulting CDs were dispersed in polyvinyl alcohol(PVA) matrix to yield solid state films,where the self-quenching effect in solid state was effectively avoided.A full-color light-emitting diode was fabricated by packing the CDs-PVA composites on the top of a UV-chip,which have superior potential applications in CDs-based solid-state lighting system.展开更多
Crops will be harmed by fungi,pests and weeds during their growth.In the past half century,scientists have conducted in-depth research on natural products extracted from microorganisms,plants or animals,and used natur...Crops will be harmed by fungi,pests and weeds during their growth.In the past half century,scientists have conducted in-depth research on natural products extracted from microorganisms,plants or animals,and used natural products and their derivatives as the lead for pesticides discovery.Natural product pesticides have the advantages of easy degradation in the environment,selective control and safety to non-target organisms.This review summarizes the studies on natural products pesticides in recent years,including natural products of chemical modification and biosynthesis,mainly fungicides,herbicides,insecticides and acaricides.We classify natural products according to their active fragments,and discuss their effects on the control of agricultural fungi,pests and weeds.Ultimately,we found that lead discovery based on natural products has great advantages in pesticide development.展开更多
Exploring plant behavior at the cellular scale in a minimally invasive manner is critical to understanding plant adaptation to the environment.Phytohormones play vital regulatory roles in multiple aspects of plant gro...Exploring plant behavior at the cellular scale in a minimally invasive manner is critical to understanding plant adaptation to the environment.Phytohormones play vital regulatory roles in multiple aspects of plant growth and development and acclimation to environmental changes.Since the biosynthesis,modification,transportation,and degradation of plant hormones in plants change with time and space,their content level and distribution are highly dynamic.To monitor the production,transport,perception,and distribution of phytohormones within undamaged tissues,we require qualitative and quantitative tools endowed with remarkably high temporal and spatial resolution.Fluorescent probes are regarded as excellent tools for widespread plant imaging because of their high sensitivity and selectivity,reproducibility,real-time in situ detection,and uncomplicated mechanism elucidation.In this review,we provide a systematical overview of the progress in the sensing and imaging of phytohormone fluorescent probes and fluorescently labeled phytohormones to their receptors in plants.Moreover,forthcoming viewpoints and possible applications of these fluorescent probes within the realm of plants are also presented.We hold the conviction that the new perspective brought by this paper can promote the development of fluorescent probes,enabling them to have better detection performance in plant hormone imaging.展开更多
A novel fluorescent probe based on 4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene(BODIPY)structure as fluorophore with 7-nitro-1,2,3-benzoxadiazole(NBD)served as detection unit was designed for specific and sensitive dete...A novel fluorescent probe based on 4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene(BODIPY)structure as fluorophore with 7-nitro-1,2,3-benzoxadiazole(NBD)served as detection unit was designed for specific and sensitive detection of H2S in living cells and zebrafish.In this work,we prepared a novel fluorescent probe for detection of hydrogen sulfide with strong fluorescent enhancement,good biocompatible and excellent specifically detection.The probe 1 displayed emission at 580 nm with excited wavelength at 530 nm in aqueous solution which organic proportion was only 10%.This probe exhibits highly selectively and specifically to detect H2S compared with other related interferences including sulphur-amino acids,sulfite ion and cations.In the addition of H2S into the detection system,the fluorescent intensity was sharply increased about 170-fold with the limitation detection as low as 16.8 nM.The sensing mechanism was through the cleave reaction between analyte and NBD unit which was characterized by high resolution mass spectrum(HRMS).This platform also permits low biotoxicity which can successfully be utilized to evaluate the concentration level of H2S and imaging in living cells and zebrafish.展开更多
Single atom catalysts(SACs)have attracted considerable attention due to their unique structures and excellent catalytic performance,especially in the area of catalysis science and energy conversion and storage.In rece...Single atom catalysts(SACs)have attracted considerable attention due to their unique structures and excellent catalytic performance,especially in the area of catalysis science and energy conversion and storage.In recent years,SACs have emerged as a new type of sensing material for constructing electrochemical sensors(ECSs),presenting excellent sensitivity,selectivity,and stability.Herein,we review the recent advances of SACs in electrochemical sensing and discuss the status quo of current SAC-based ECSs.Specifically,the fundamentals of SAC-based ECSs are outlined,including the involved central metal atoms and various supports of SACs in this field,the detection mechanisms,and improving strategies of SAC-based ECSs.Moreover,the important applications of SAC-based ECSs are listed and classified,covering the detection of reactive oxygen and nitrogen species,environmental pollutants,disease biomarkers,and pharmaceuticals.Last,based on abundant reported cases,the current conundrums of SAC-based ECSs are summarized,and the prediction of their future developing trends is also put forward.展开更多
The escalating challenges in water treatment,exacerbated by climate change,have catalyzed the emergence of innovative solutions.Novel adsorption separation and membrane filtration methodologies,achieved through molecu...The escalating challenges in water treatment,exacerbated by climate change,have catalyzed the emergence of innovative solutions.Novel adsorption separation and membrane filtration methodologies,achieved through molecular structure manipulation,are gaining traction in the environmental and energy sectors.Separation technologies,integral to both the chemical industry and everyday life,encompass concentration and purification processes.Macrocycles,recognized as porous materials,have been prevalent in water treatment due to their inherent benefits:stability,adaptability,and facile modification.These structures typically exhibit high selectivity and reversibility for specific ions or molecules,enhancing their efficacy in water purification processes.The progression of purification methods utilizing macrocyclic frameworks holds promise for improved adsorption separations,membrane filtrations,resource utilization,and broader water treatment applications.This review encapsulates the latest breakthroughs in macrocyclic host-vip chemistry,with a focus on adsorptive and membrane separations.The aim is to spotlight strategies for optimizing macrocycle designs and their subsequent implementation in environmental and energy endeavors,including desalination,elemental extraction,seawater energy harnessing,and sustainable extraction.Hopefully,this review can guide the design and functionality of macrocycles,offering a significantly promising pathway for pollutant removal and resource utilization.展开更多
基金financial support from the National Natural Science Foundation of China(Nos.82104065,32061143045,22276142,22474003)the National Key Research&Development Program(Nos.2019YFE0123100,2022YFE0199800)+2 种基金Anhui Provincial Natural Science Foundation(No.2208085MB38)Anhui Provincial Natural Science Foundation for Distinguished Young Scholars(No.2008085J11)Foundation of Education Department of Anhui Province(No.2022AH010023).
文摘The organic fluorescent probes were widely explored for specific detection of chemical nerve agent simulants.However,the fluorescence quenching,long-time response,and limitation of detection further impeded their practical applications.Herein,the fluorescent nanofiber chitosan-1 was prepared through the modification of chitosan with 1,8-naphthalimide as fluorophore and piperazine as the detection segment.The high specific surface of fluorescent nanofiber chitosan-1 showed ultrasensitive and selective detection of diethyl chlorophosphate(DCP)in solution and vapor.The satisfied linear relationship between the fluorescent intensity and the concentration of DCP ranging from 0μmol/L to 100μmol/L was obtained.The limitation of detection was measured as low as 2.2 nmol/L within 30 s.The sensing mechanism was explored through the photoinduced electron transfer(PET)mechanism which was confirmed by ^(1)H,^(31)P NMR,and mass spectra(MS).The ultrasensitive detection of nanofibers may provide valuable insights for enhancing the sensing performance in visually detecting chemical nerve agents.
基金finically supported by the National Key R&D Program of China (No. 2017YFE0118200)National Natural Science Foundation of China (Nos. 61671019, 51703002, and 51474003)+2 种基金Natural Science Foundation of Anhui Province, China (No. 1908085MB35)Natural Science Foundation for the Higher Education Institutions of Anhui Province of China (Nos. KJ2018A0040 and KJ2018A0067)Key Lab of Guang Dong Province for High Property and Functional Polymer Materials (No. 20170003)。
文摘Fluorescent carbon dots(CDs) are admirable nanomaterials due to their superior optical properties and low cost.However,regulation of the emission colors in CDs for lighting device still remains a challenge.In this work,we developed a green hydrothermal method to obtain three emission colors of CDs using L-tyrosine(for blue CDs),o-phenylendiamine(for green CDs) and L-tyrosine/o-phenylendiamine mixture(for orange-red CDs).These CDs possess good water dispersibility,strong emission with high quantum yields,and excellent photostability.Furthermore,the resulting CDs were dispersed in polyvinyl alcohol(PVA) matrix to yield solid state films,where the self-quenching effect in solid state was effectively avoided.A full-color light-emitting diode was fabricated by packing the CDs-PVA composites on the top of a UV-chip,which have superior potential applications in CDs-based solid-state lighting system.
基金the financial support for this research from the National Natural Science Foundation of China(22177051,32061143045)the National Key Research and Development Program of China(2021YFD1700103)+1 种基金Sichuan Key Research and Development Program(22ZDYF0186,2021YFN0134)the College Student Research Training Program from Nanjing Agricultural University(202110307002T).
文摘Crops will be harmed by fungi,pests and weeds during their growth.In the past half century,scientists have conducted in-depth research on natural products extracted from microorganisms,plants or animals,and used natural products and their derivatives as the lead for pesticides discovery.Natural product pesticides have the advantages of easy degradation in the environment,selective control and safety to non-target organisms.This review summarizes the studies on natural products pesticides in recent years,including natural products of chemical modification and biosynthesis,mainly fungicides,herbicides,insecticides and acaricides.We classify natural products according to their active fragments,and discuss their effects on the control of agricultural fungi,pests and weeds.Ultimately,we found that lead discovery based on natural products has great advantages in pesticide development.
基金supported by the National Key Research and Development Program of China(2022YFD1700300,2022YFE0199800)the National Natural Science Foundation of China(32072443,82104065,32061143045)+1 种基金the Natural Science Foundation of Jiangsu Province(BK20201323)the Distinguished Young Research Project of Anhui Higher Education Institution(2022AH020035).
文摘Exploring plant behavior at the cellular scale in a minimally invasive manner is critical to understanding plant adaptation to the environment.Phytohormones play vital regulatory roles in multiple aspects of plant growth and development and acclimation to environmental changes.Since the biosynthesis,modification,transportation,and degradation of plant hormones in plants change with time and space,their content level and distribution are highly dynamic.To monitor the production,transport,perception,and distribution of phytohormones within undamaged tissues,we require qualitative and quantitative tools endowed with remarkably high temporal and spatial resolution.Fluorescent probes are regarded as excellent tools for widespread plant imaging because of their high sensitivity and selectivity,reproducibility,real-time in situ detection,and uncomplicated mechanism elucidation.In this review,we provide a systematical overview of the progress in the sensing and imaging of phytohormone fluorescent probes and fluorescently labeled phytohormones to their receptors in plants.Moreover,forthcoming viewpoints and possible applications of these fluorescent probes within the realm of plants are also presented.We hold the conviction that the new perspective brought by this paper can promote the development of fluorescent probes,enabling them to have better detection performance in plant hormone imaging.
基金supported by the National Natural Science Foundation of China(82104065,32061143045)the National Key Research&Development Program(2019YFE0123100,2022YFE0199800)+1 种基金the Distinguished Young Research Project of Anhui Higher Education Institution(2022AH020035)the Natural Science Research Project of Anhui Higher Education Institution(KJ2021A0402,KJ2020A0228)for financial support。
文摘A novel fluorescent probe based on 4,4-Difluoro-4-bora-3a,4a-diaza-s-indacene(BODIPY)structure as fluorophore with 7-nitro-1,2,3-benzoxadiazole(NBD)served as detection unit was designed for specific and sensitive detection of H2S in living cells and zebrafish.In this work,we prepared a novel fluorescent probe for detection of hydrogen sulfide with strong fluorescent enhancement,good biocompatible and excellent specifically detection.The probe 1 displayed emission at 580 nm with excited wavelength at 530 nm in aqueous solution which organic proportion was only 10%.This probe exhibits highly selectively and specifically to detect H2S compared with other related interferences including sulphur-amino acids,sulfite ion and cations.In the addition of H2S into the detection system,the fluorescent intensity was sharply increased about 170-fold with the limitation detection as low as 16.8 nM.The sensing mechanism was through the cleave reaction between analyte and NBD unit which was characterized by high resolution mass spectrum(HRMS).This platform also permits low biotoxicity which can successfully be utilized to evaluate the concentration level of H2S and imaging in living cells and zebrafish.
基金supported by the National Natural Science Foundation of China(Nos.22375005 and 21771003)the Natural Science Research Project of Anhui Province Education Department(Nos.2022AH050323 and 2023AH051116)+1 种基金the Major industrial innovation plan of Anhui Province(No.AHZDCYCX-LSDT2023-04)the University Synergy Innovation Program of Anhui Province(No.GXXT-2022-006).
文摘Single atom catalysts(SACs)have attracted considerable attention due to their unique structures and excellent catalytic performance,especially in the area of catalysis science and energy conversion and storage.In recent years,SACs have emerged as a new type of sensing material for constructing electrochemical sensors(ECSs),presenting excellent sensitivity,selectivity,and stability.Herein,we review the recent advances of SACs in electrochemical sensing and discuss the status quo of current SAC-based ECSs.Specifically,the fundamentals of SAC-based ECSs are outlined,including the involved central metal atoms and various supports of SACs in this field,the detection mechanisms,and improving strategies of SAC-based ECSs.Moreover,the important applications of SAC-based ECSs are listed and classified,covering the detection of reactive oxygen and nitrogen species,environmental pollutants,disease biomarkers,and pharmaceuticals.Last,based on abundant reported cases,the current conundrums of SAC-based ECSs are summarized,and the prediction of their future developing trends is also put forward.
基金supported by the National Key Research&Development Program(2022YFE0199800)National Natural Science Foundation of China(82104065,32061143045)+1 种基金Distinguished Young Research Project of Anhui Higher Education Institution(2022AH020035)Science and Technology Plans of Tianjin(22ZYJDSS00070).
文摘The escalating challenges in water treatment,exacerbated by climate change,have catalyzed the emergence of innovative solutions.Novel adsorption separation and membrane filtration methodologies,achieved through molecular structure manipulation,are gaining traction in the environmental and energy sectors.Separation technologies,integral to both the chemical industry and everyday life,encompass concentration and purification processes.Macrocycles,recognized as porous materials,have been prevalent in water treatment due to their inherent benefits:stability,adaptability,and facile modification.These structures typically exhibit high selectivity and reversibility for specific ions or molecules,enhancing their efficacy in water purification processes.The progression of purification methods utilizing macrocyclic frameworks holds promise for improved adsorption separations,membrane filtrations,resource utilization,and broader water treatment applications.This review encapsulates the latest breakthroughs in macrocyclic host-vip chemistry,with a focus on adsorptive and membrane separations.The aim is to spotlight strategies for optimizing macrocycle designs and their subsequent implementation in environmental and energy endeavors,including desalination,elemental extraction,seawater energy harnessing,and sustainable extraction.Hopefully,this review can guide the design and functionality of macrocycles,offering a significantly promising pathway for pollutant removal and resource utilization.
