In this work,glutathione capped CdTe QDs(GSH-QDs)were prepared through a one-pot process and found to be quenched by Cr^3+,Ag^+and Cu^2+ions.Cr^3+and chromium(III)picolinate could be quantitatively measured after mask...In this work,glutathione capped CdTe QDs(GSH-QDs)were prepared through a one-pot process and found to be quenched by Cr^3+,Ag^+and Cu^2+ions.Cr^3+and chromium(III)picolinate could be quantitatively measured after masking Cu^2+and Ag+ions by sulfide.Under optimal conditions,linear quenching was observed for Cr^3+in the ranges of 0–2.0M and the limit of detection was 3.0 nM.The recoveries for Cr^3+in vitamin supplements obtained were from 92.5%to 106%.The determination results of chromium(III)picolinate in vitamin supplement samples were compared to that obtained using flame atomic absorption spectrometry(FAAS)method,and the result showed good reliability.展开更多
For decades,chiral nanomaterials have been extensively studied because of their extraordinary properties.Chiral nanostructures have attracted a lot of interest because of their potential applications including biosens...For decades,chiral nanomaterials have been extensively studied because of their extraordinary properties.Chiral nanostructures have attracted a lot of interest because of their potential applications including biosensing,asymmetric catalysis,optical devices,and negative index materials.Circularly polarized light(CPL)is the most attractive source for chirality owing to its high availability,and now it has been used as a chiral source for the preparation of chiral matter.In this review,the recent progress in the field of CPL-enabled chiral nanomaterials is summarized.Firstly,the recent advancements in the fabrication of chiral materials using circularly polarized light are described,focusing on the unique strategies.Secondly,an overview of the potential applications of chiral nanomaterials driven by CPL is provided,with a particular emphasis on biosensing,catalysis,and phototherapy.Finally,a perspective on the challenges in the field of CPL-enabled chiral nanomaterials is given.展开更多
Quercetin-3-O-sambubioside[Quercetin-3-O-β-D-xylopyranosyl(1→2)-β-D-glucopyranoside]was separated and purified by semi-preparative high-speed counter-current chromatography(HSCCC)with a twophase-solvent system comp...Quercetin-3-O-sambubioside[Quercetin-3-O-β-D-xylopyranosyl(1→2)-β-D-glucopyranoside]was separated and purified by semi-preparative high-speed counter-current chromatography(HSCCC)with a twophase-solvent system composed of ethyl acetate-nbutanol-water(4∶1∶5,v/v)from the leaves of Nelumbo nucifera(Lotus).A total of 5.0 mg of the targeted compound with a purity of 98.6%as determined by high performance liquid chromatography(HPLC)was obtained from 100 mg of the crude extract cleaned up by AB-8 macroporous resin in a one-step separation.Quercetin-3-O-sambubioside was a novel flavonoid glycoside from the leaves of Nelumbo nucifera,and its chemical structure was identified by means of ESI-MS,1D NMR and 2D NMR.展开更多
The research on circularly polarized luminescence(CPL)has garnered significant attention in recent years due to its many potential applications.One aspect of this research involves the pursuit of chiral materials that...The research on circularly polarized luminescence(CPL)has garnered significant attention in recent years due to its many potential applications.One aspect of this research involves the pursuit of chiral materials that posess both high luminescence efficiency and dissymmetry factors.The investigation of CPL behavior is of paramount importance because the structural information of chiral luminescent systems in the excited state can be uncovered.The objective of this review is to offer a comprehensive overview of the latest advancements in the CPL research field,with a particular focus on the development of chiral emissive materials,including organic,inorganic,and hybrid substances.Furthermore,this review outlines the recent applications of these materials in areas such as displays,photoelectric devices,anticounterfeiting measures,and sensors.Finally,we highlight the primary challenges and potential prospects of CPL materials.Our aspiration is that this endeavor will contribute new perspectives and insights that further advancements in related research fields.展开更多
沙门氏菌属是全球关注的重要食源性致病菌之一.本文以沙门氏菌属特异性脂多糖抗体与胶体金纳米粒子进行偶联,并进行固相化装配了适合于快速、可视化分析的金标试纸传感器.裸眼观察下,金标试纸条可以识别浓度低至25 ng mL^-1的沙门氏菌...沙门氏菌属是全球关注的重要食源性致病菌之一.本文以沙门氏菌属特异性脂多糖抗体与胶体金纳米粒子进行偶联,并进行固相化装配了适合于快速、可视化分析的金标试纸传感器.裸眼观察下,金标试纸条可以识别浓度低至25 ng mL^-1的沙门氏菌属脂多糖.结合灰度扫描分析,金标试纸对受试的12种沙门氏菌的敏感性可达到103菌落形成单位(CFU).对牛奶样品进行12 h的富集孵育,该金标试纸条对沙门氏菌的检测灵敏度可达1个CFU.金标试纸传感器无需复杂的前处理过程和专业设备,操作简单,有效地提高了致病菌的检测效率.展开更多
Nucleic acids are natural biopolymers of nucleotides that store, encode, transmit and express genetic information, which play central roles in diverse cellular events and diseases in living things. The analysis of nuc...Nucleic acids are natural biopolymers of nucleotides that store, encode, transmit and express genetic information, which play central roles in diverse cellular events and diseases in living things. The analysis of nucleic acids and nucleic acids-based analysis have been widely applied in biological studies, clinical diagnosis, environmental analysis, food safety and forensic analysis.During the past decades, the field of nucleic acids analysis has been rapidly advancing with many technological breakthroughs.In this review, we focus on the methods developed for analyzing nucleic acids, nucleic acids-based analysis, device for nucleic acids analysis, and applications of nucleic acids analysis. The representative strategies for the development of new nucleic acids analysis in this field are summarized, and key advantages and possible limitations are discussed. Finally, a brief perspective on existing challenges and further research development is provided.展开更多
基金The work was supported by the National Natural Science Foundation of China(31371767)the National S&T support program of China(2015BAD17B02)+1 种基金Jiangsu Entry-Exit Inspection and Quarantine Bureau China(2017KJ19)the National Engineering Research Center for Functional Food,Jiangnan University and the Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province,Jiangnan University.
文摘In this work,glutathione capped CdTe QDs(GSH-QDs)were prepared through a one-pot process and found to be quenched by Cr^3+,Ag^+and Cu^2+ions.Cr^3+and chromium(III)picolinate could be quantitatively measured after masking Cu^2+and Ag+ions by sulfide.Under optimal conditions,linear quenching was observed for Cr^3+in the ranges of 0–2.0M and the limit of detection was 3.0 nM.The recoveries for Cr^3+in vitamin supplements obtained were from 92.5%to 106%.The determination results of chromium(III)picolinate in vitamin supplement samples were compared to that obtained using flame atomic absorption spectrometry(FAAS)method,and the result showed good reliability.
基金financially the National Natural Science Foundation of China(51902136)the Fundamental Research Funds for the Central Universities(JUSRP12003,JUSRP622026)Natural Science Foundation of Jiangsu Province(BK20211236)。
文摘For decades,chiral nanomaterials have been extensively studied because of their extraordinary properties.Chiral nanostructures have attracted a lot of interest because of their potential applications including biosensing,asymmetric catalysis,optical devices,and negative index materials.Circularly polarized light(CPL)is the most attractive source for chirality owing to its high availability,and now it has been used as a chiral source for the preparation of chiral matter.In this review,the recent progress in the field of CPL-enabled chiral nanomaterials is summarized.Firstly,the recent advancements in the fabrication of chiral materials using circularly polarized light are described,focusing on the unique strategies.Secondly,an overview of the potential applications of chiral nanomaterials driven by CPL is provided,with a particular emphasis on biosensing,catalysis,and phototherapy.Finally,a perspective on the challenges in the field of CPL-enabled chiral nanomaterials is given.
基金funded by the Natural Science Foundation of Jiangxi Province(2006GY0066)the Research Project of Education Office of Jiangxi Province(20030058)the Program for Yangtse Scholars and Innovative Research Team in University(IRT0540).
文摘Quercetin-3-O-sambubioside[Quercetin-3-O-β-D-xylopyranosyl(1→2)-β-D-glucopyranoside]was separated and purified by semi-preparative high-speed counter-current chromatography(HSCCC)with a twophase-solvent system composed of ethyl acetate-nbutanol-water(4∶1∶5,v/v)from the leaves of Nelumbo nucifera(Lotus).A total of 5.0 mg of the targeted compound with a purity of 98.6%as determined by high performance liquid chromatography(HPLC)was obtained from 100 mg of the crude extract cleaned up by AB-8 macroporous resin in a one-step separation.Quercetin-3-O-sambubioside was a novel flavonoid glycoside from the leaves of Nelumbo nucifera,and its chemical structure was identified by means of ESI-MS,1D NMR and 2D NMR.
基金supported by the Chirality Major Research Plan of the National Natural Science Foundation of China(grant nos.92256304 and 92056204).
文摘The research on circularly polarized luminescence(CPL)has garnered significant attention in recent years due to its many potential applications.One aspect of this research involves the pursuit of chiral materials that posess both high luminescence efficiency and dissymmetry factors.The investigation of CPL behavior is of paramount importance because the structural information of chiral luminescent systems in the excited state can be uncovered.The objective of this review is to offer a comprehensive overview of the latest advancements in the CPL research field,with a particular focus on the development of chiral emissive materials,including organic,inorganic,and hybrid substances.Furthermore,this review outlines the recent applications of these materials in areas such as displays,photoelectric devices,anticounterfeiting measures,and sensors.Finally,we highlight the primary challenges and potential prospects of CPL materials.Our aspiration is that this endeavor will contribute new perspectives and insights that further advancements in related research fields.
基金supported by the National Natural Science Foundation of China(21471068)the National Key Technologies R&D Program from Ministry of Science and Technology of China(2012BAK08B01)+2 种基金Special Fund for Argo-scientific Research in the Public Interest(201513006)the Natural Science Foundation of Jiangsu Province(BK201501,BK20140003,BE2013613,BE2013611 and CSE11N1310)the Graduate Innovation Project in Jiangsu Province of China(KYLX15_1137)
文摘沙门氏菌属是全球关注的重要食源性致病菌之一.本文以沙门氏菌属特异性脂多糖抗体与胶体金纳米粒子进行偶联,并进行固相化装配了适合于快速、可视化分析的金标试纸传感器.裸眼观察下,金标试纸条可以识别浓度低至25 ng mL^-1的沙门氏菌属脂多糖.结合灰度扫描分析,金标试纸对受试的12种沙门氏菌的敏感性可达到103菌落形成单位(CFU).对牛奶样品进行12 h的富集孵育,该金标试纸条对沙门氏菌的检测灵敏度可达1个CFU.金标试纸传感器无需复杂的前处理过程和专业设备,操作简单,有效地提高了致病菌的检测效率.
文摘Nucleic acids are natural biopolymers of nucleotides that store, encode, transmit and express genetic information, which play central roles in diverse cellular events and diseases in living things. The analysis of nucleic acids and nucleic acids-based analysis have been widely applied in biological studies, clinical diagnosis, environmental analysis, food safety and forensic analysis.During the past decades, the field of nucleic acids analysis has been rapidly advancing with many technological breakthroughs.In this review, we focus on the methods developed for analyzing nucleic acids, nucleic acids-based analysis, device for nucleic acids analysis, and applications of nucleic acids analysis. The representative strategies for the development of new nucleic acids analysis in this field are summarized, and key advantages and possible limitations are discussed. Finally, a brief perspective on existing challenges and further research development is provided.