The sulfur-fumigation process not only induces the chemical transformation of Lycium barbarum(Lb,a widely used traditional Chinese medicine)but also severely influences human health.Given the existing challenges like ...The sulfur-fumigation process not only induces the chemical transformation of Lycium barbarum(Lb,a widely used traditional Chinese medicine)but also severely influences human health.Given the existing challenges like the complex and time-consuming operation,as well as the high technical demands of the current detection methods for sulfur-fumed Lycium barbarum(SF-Lb),this paper employs a simple chemiresistor to carry out discrimination research between Lb and SF-Lb which have significant differences in volatolomics.The sensor is constructed by a conductive metal-organic framework(cMOF)thin film,Cu_(3)(HHTP)_(2),due to its abundant active sites,excellent electron transfer performance as well as the capacity to detect specific groups of volatile organic compounds(VOCs).Consequently,the response values of Cu_(3)(HHTP)_(2)-based sensor to 0.5 g SF-Lb(151.74%)are significantly higher than those to normal Lb(80.07%),identifying SF-Lb simply and rapidly with an accuracy of~100%.Our work investigates volatolomics of SF-Lb and establishes a new rapid discrimination method for sulfur-fumed traditional Chinese herbs.展开更多
As one of the famous traditional Chinese herbal medicines,Fritillariae Cirrhosae Bulbus(FCB)is widely used in the prevention and treatment of respiratory diseases and has the best curative effect among the known friti...As one of the famous traditional Chinese herbal medicines,Fritillariae Cirrhosae Bulbus(FCB)is widely used in the prevention and treatment of respiratory diseases and has the best curative effect among the known fritillarias medicines.Due to the variety,complex sources,similar appearance and shape,it is difficult to distinguish FCB with high curative effect(h-FCB)from other common fritillarias(c-FCB)in the market.In this paper,a very simple chemiresistor is used to identify FCB from three commonly used fritillarias drugs.The sensors are fabricated by anisotropic electrically conductive metal-organic framework(cMOF)thin film Cu_(3)(HHTP)_(2)(Cu-HHTP_([001])and Cu-HHTP_([100]))as active materials owing to their ability to detect specific groups of volatile organic compounds(volatolomics)as the functional motifs of chemiresistor.As a result,the sensors show orientation-dependence identification ability to FCB.Cu-HHTP_([001])-based sensor shows the highest response(344.17%)to 0.5 g h-FCB powder volatiles among its three other c-FCB which is much higher than Cu-HHTP_([100])(135.50%).Ultimately,Cu-HHTP_([001])can realize the identification of FCB with an accuracy of 97.2% in a simple and real-time manner.展开更多
Electrochemical sensors,with their outstanding sensitivity,excellent selectivity,ease of operation,and lower manufacturing costs,have found widespread applications in fields such as disease diagnosis,environmental mon...Electrochemical sensors,with their outstanding sensitivity,excellent selectivity,ease of operation,and lower manufacturing costs,have found widespread applications in fields such as disease diagnosis,environmental monitoring,and food safety.In the development of sensing materials,metal-organic frameworks(MOFs)have become a research hotspot due to their high specific surface area,tunable pore structures,and high designability.Recently,conductive metal-organic frameworks(CMOFs)have brought innovative opportunities to the field of electrochemical sensing,attributing to their remarkable capabilities in catalysis,electron transport,and signal amplification.This review summarizes the significant progress of CMOFs in the field of electrochemical sensing.Firstly,the design and synthesis strategies for CMOFs used in electrochemical sensing are explored,including enhancing the electrochemical properties of MOFs through precise design of different metal nodes and ligands or via post-synthetic modification techniques,covering Cu-based CMOFs,Ni-based CMOFs,Fe-based CMOFs,and CMOF composites.Furthermore,this article elaborately discusses the breakthrough achievements of electrochemical sensors based on CMOFs in applications such as the determination of inorganic ions,detection of organic pollutants,and recognition of gases and biomolecules,and introduces the principles of electrochemical sensing methods and the role of CMOFs in enhancing the performance of electrochemical sensors.Finally,this review analyzes the main challenges currently faced by CMOFs in the field of electrochemical sensors and offers perspectives on their future development.These challenges mainly include stability,selectivity,production costs,and the realization of their large-scale application.CMOFs provide new ideas and material platforms for the development of electrochemical sensors.As researchers deepen their understanding of their properties and technological advances continue,the application prospects of CMOF-based electrochemical sensors will be even broader.展开更多
Highly sensitive sensors with extensive applications are extremely desired in the next-generation wearable electronics for human motion monitoring,human-machine interface and intelligent robotics,while singlefunctiona...Highly sensitive sensors with extensive applications are extremely desired in the next-generation wearable electronics for human motion monitoring,human-machine interface and intelligent robotics,while singlefunctional pressure sensors cannot fulfill the growing demands of modern technological advances.Herein,an all-fabric and multilayered piezoresistive sensor based on conductive metal-organic frame-work/layered double hydroxide(cMOF/LDH)hetero-nanoforest is demonstrated to achieve multiple applications including pulse detection,joint motion detection,sound detection and information transmission.Benefiting from the synergism of cMOF/LDH hetero-nanoforest and multilayered structure,the sensor exhibits a high sensitivity(1.61×10^(9)kPa^(−1))over a broad pressure range(0-100 kPa),a fast response/recovery time(71 ms/71 ms)and a low detection limit(18 Pa),as well as reliable dynamic stability(8000 cycles).It is gratifying to note that the introduction of cMOFs endows the sensor with the potential to detect the concentration of NH_(3)(1-100 ppm)and sunlight intensity(10-100 mW cm^(−2)).This work shows great potential in multifunctional sensing,which enlightens a strategy for advancing the development process of highly sensitive intelligent wearable devices.展开更多
基金supported by the National Natural Science Foundation of China(Nos.22205121,22494633,22401281)CAS President's International Fellowship for Visiting Scientists(No.2024VBC0002)+2 种基金the research fund of State Key Laboratory of Mesoscience and Engineering(Nos.MESO-23-A07,MESO-23-T02,MESO-24-A01)First-class Discipline Construction Project(Chemistry)in Higher Education Institutions of Ningxia(Ningxia Normal University)Engineering Research Center of Liupanshan(No.HGZD22-27).
文摘The sulfur-fumigation process not only induces the chemical transformation of Lycium barbarum(Lb,a widely used traditional Chinese medicine)but also severely influences human health.Given the existing challenges like the complex and time-consuming operation,as well as the high technical demands of the current detection methods for sulfur-fumed Lycium barbarum(SF-Lb),this paper employs a simple chemiresistor to carry out discrimination research between Lb and SF-Lb which have significant differences in volatolomics.The sensor is constructed by a conductive metal-organic framework(cMOF)thin film,Cu_(3)(HHTP)_(2),due to its abundant active sites,excellent electron transfer performance as well as the capacity to detect specific groups of volatile organic compounds(VOCs).Consequently,the response values of Cu_(3)(HHTP)_(2)-based sensor to 0.5 g SF-Lb(151.74%)are significantly higher than those to normal Lb(80.07%),identifying SF-Lb simply and rapidly with an accuracy of~100%.Our work investigates volatolomics of SF-Lb and establishes a new rapid discrimination method for sulfur-fumed traditional Chinese herbs.
基金supported by the National Natural Science Foundation of China(No.22205121)Ningxia Autonomous Region Key R&D Program(Special for Talent Introduction)(No.2021BEB04026)+4 种基金Ningxia Natural Science Foundation Project(No.2023AAC03354)the research fund of State Key Laboratory of Mesoscience and Engineering(Nos.MESO-23-A07,MESO-23-T02,MESO-23-T05,MESO-24-A01)Construction of First-Class Disciplines(Pedagogy Discipline)in Ningxia Higher Education Institutions(No.NXYLXK2021B10)First-class Discipline Construction Project(Chemistry)in Higher Education Institutions of Ningxia(Ningxia Normal University)Engineering Research Center of Liupanshan(Nos.HGZD23-15,ZDSYS12).
文摘As one of the famous traditional Chinese herbal medicines,Fritillariae Cirrhosae Bulbus(FCB)is widely used in the prevention and treatment of respiratory diseases and has the best curative effect among the known fritillarias medicines.Due to the variety,complex sources,similar appearance and shape,it is difficult to distinguish FCB with high curative effect(h-FCB)from other common fritillarias(c-FCB)in the market.In this paper,a very simple chemiresistor is used to identify FCB from three commonly used fritillarias drugs.The sensors are fabricated by anisotropic electrically conductive metal-organic framework(cMOF)thin film Cu_(3)(HHTP)_(2)(Cu-HHTP_([001])and Cu-HHTP_([100]))as active materials owing to their ability to detect specific groups of volatile organic compounds(volatolomics)as the functional motifs of chemiresistor.As a result,the sensors show orientation-dependence identification ability to FCB.Cu-HHTP_([001])-based sensor shows the highest response(344.17%)to 0.5 g h-FCB powder volatiles among its three other c-FCB which is much higher than Cu-HHTP_([100])(135.50%).Ultimately,Cu-HHTP_([001])can realize the identification of FCB with an accuracy of 97.2% in a simple and real-time manner.
基金financially supported by the National Natural Science Foundation of China(Nos.22204089,52201281,and22234006)Natural Science Foundation of Shandong Province(No.ZR2023MB016)。
文摘Electrochemical sensors,with their outstanding sensitivity,excellent selectivity,ease of operation,and lower manufacturing costs,have found widespread applications in fields such as disease diagnosis,environmental monitoring,and food safety.In the development of sensing materials,metal-organic frameworks(MOFs)have become a research hotspot due to their high specific surface area,tunable pore structures,and high designability.Recently,conductive metal-organic frameworks(CMOFs)have brought innovative opportunities to the field of electrochemical sensing,attributing to their remarkable capabilities in catalysis,electron transport,and signal amplification.This review summarizes the significant progress of CMOFs in the field of electrochemical sensing.Firstly,the design and synthesis strategies for CMOFs used in electrochemical sensing are explored,including enhancing the electrochemical properties of MOFs through precise design of different metal nodes and ligands or via post-synthetic modification techniques,covering Cu-based CMOFs,Ni-based CMOFs,Fe-based CMOFs,and CMOF composites.Furthermore,this article elaborately discusses the breakthrough achievements of electrochemical sensors based on CMOFs in applications such as the determination of inorganic ions,detection of organic pollutants,and recognition of gases and biomolecules,and introduces the principles of electrochemical sensing methods and the role of CMOFs in enhancing the performance of electrochemical sensors.Finally,this review analyzes the main challenges currently faced by CMOFs in the field of electrochemical sensors and offers perspectives on their future development.These challenges mainly include stability,selectivity,production costs,and the realization of their large-scale application.CMOFs provide new ideas and material platforms for the development of electrochemical sensors.As researchers deepen their understanding of their properties and technological advances continue,the application prospects of CMOF-based electrochemical sensors will be even broader.
基金supported by the National Natural Science Foundation of China(Nos.52271209 and 51762013)the Key Project of Hebei Natural Science Foundation(No.E20202201030)+5 种基金the Beijing-Tianjin-Hebei Collaborative Innovation Community Construction Project(No.21344301D)the Second Batch of Young Talent of Hebei Province(Nos.70280016160250 and 70280011808)the Key Fund in Hebei Province Department of Education China(No.ZD2021014)the Central Government Guide Local Funding Projects for Scientific and Technological Development(Nos.216Z4404G and 206Z4402G)the Interdisciplinary Research Program of Natural Science of Hebei University(No.DXK202107)the Government Foundation of Clinical Medicine Talents Training Program of Hebei Province(No.361007).
文摘Highly sensitive sensors with extensive applications are extremely desired in the next-generation wearable electronics for human motion monitoring,human-machine interface and intelligent robotics,while singlefunctional pressure sensors cannot fulfill the growing demands of modern technological advances.Herein,an all-fabric and multilayered piezoresistive sensor based on conductive metal-organic frame-work/layered double hydroxide(cMOF/LDH)hetero-nanoforest is demonstrated to achieve multiple applications including pulse detection,joint motion detection,sound detection and information transmission.Benefiting from the synergism of cMOF/LDH hetero-nanoforest and multilayered structure,the sensor exhibits a high sensitivity(1.61×10^(9)kPa^(−1))over a broad pressure range(0-100 kPa),a fast response/recovery time(71 ms/71 ms)and a low detection limit(18 Pa),as well as reliable dynamic stability(8000 cycles).It is gratifying to note that the introduction of cMOFs endows the sensor with the potential to detect the concentration of NH_(3)(1-100 ppm)and sunlight intensity(10-100 mW cm^(−2)).This work shows great potential in multifunctional sensing,which enlightens a strategy for advancing the development process of highly sensitive intelligent wearable devices.
