Enantiomer identification is of paramount industrial value and physiological significance.Construction of sensitive chiral sensors with high enantiomeric discrimination ability is highly desirable.In this work,a chira...Enantiomer identification is of paramount industrial value and physiological significance.Construction of sensitive chiral sensors with high enantiomeric discrimination ability is highly desirable.In this work,a chiral covalent organic framework/anodic aluminum oxide(c-COF/AAO)membrane was prepared for electrochemical enantioselective recognition and sensing.Benefiting from the remarkable asymmetry,the asprepared nanofluidic c-COF/AAO presents a distinct ion current rectification(ICR)characteristic,enabling sensitive bioanalysis.In addition,owing to the large surface area,high chemical stability and perfect ion selectivity of chiral COF,the prepared c-COF/AAO membrane presents exceptionally selective mass transport and thereby enables excellent chiral discrimination for S-/R-Naproxen(S-/R-Npx)enantiomers.It is especially noteworthy that the detection limit is achieved as low as 3.88 pmol/L.These results raise the possibility for a facile,stable and low-cost method to carry out sensitive enantioselective recognition and detection.展开更多
第5届国际残余应力学术会议(The Fifth International Conference on Residual Stresses)于1997年6月16日至18日在瑞典的林雪平召开,与会代表有253人,来自29个国家和地区。会上交流论文271篇。会上确定,第7届国际残余应力学术会议(ICRS...第5届国际残余应力学术会议(The Fifth International Conference on Residual Stresses)于1997年6月16日至18日在瑞典的林雪平召开,与会代表有253人,来自29个国家和地区。会上交流论文271篇。会上确定,第7届国际残余应力学术会议(ICRS-7)于2004年在我国西安召开。第6届已在上次会议上确定于2000年在英国牛津召开。残余应力对材料制备、元器件和零部件的制作与使用都有很大的影响。但是,直到目前为止,在残余应力的产生、测量、控制和调整以及它对各种性能的影响等方面仍有许许多多的问题没有解决。而且,随着新型材料、先进工艺和精细元器件的不断涌现,残余应力问题变得越来越突出,因此,各工业发达国家都投入大量的人力和物力,以期在学科和工程两方面都取得较大的进展。展开更多
基金supported by grants from the National Natural Science Foundation of China(Nos.22274076,22304084)the Primary Research&Development Plan of Jiangsu Province(No.BE2022793)+1 种基金the Natural Science Foundation of Jiangsu Province of China(No.BK20230377)Jiangsu Provincial Department of Education(No.211090B52303)。
文摘Enantiomer identification is of paramount industrial value and physiological significance.Construction of sensitive chiral sensors with high enantiomeric discrimination ability is highly desirable.In this work,a chiral covalent organic framework/anodic aluminum oxide(c-COF/AAO)membrane was prepared for electrochemical enantioselective recognition and sensing.Benefiting from the remarkable asymmetry,the asprepared nanofluidic c-COF/AAO presents a distinct ion current rectification(ICR)characteristic,enabling sensitive bioanalysis.In addition,owing to the large surface area,high chemical stability and perfect ion selectivity of chiral COF,the prepared c-COF/AAO membrane presents exceptionally selective mass transport and thereby enables excellent chiral discrimination for S-/R-Naproxen(S-/R-Npx)enantiomers.It is especially noteworthy that the detection limit is achieved as low as 3.88 pmol/L.These results raise the possibility for a facile,stable and low-cost method to carry out sensitive enantioselective recognition and detection.
文摘第5届国际残余应力学术会议(The Fifth International Conference on Residual Stresses)于1997年6月16日至18日在瑞典的林雪平召开,与会代表有253人,来自29个国家和地区。会上交流论文271篇。会上确定,第7届国际残余应力学术会议(ICRS-7)于2004年在我国西安召开。第6届已在上次会议上确定于2000年在英国牛津召开。残余应力对材料制备、元器件和零部件的制作与使用都有很大的影响。但是,直到目前为止,在残余应力的产生、测量、控制和调整以及它对各种性能的影响等方面仍有许许多多的问题没有解决。而且,随着新型材料、先进工艺和精细元器件的不断涌现,残余应力问题变得越来越突出,因此,各工业发达国家都投入大量的人力和物力,以期在学科和工程两方面都取得较大的进展。
