Fabrication of high-performance sensory materials for the ultra-sensitive detection of antibiotics in water is of significant importance for community health and environmental quality.Herein,two Zn(II)-based metal–or...Fabrication of high-performance sensory materials for the ultra-sensitive detection of antibiotics in water is of significant importance for community health and environmental quality.Herein,two Zn(II)-based metal–organic frameworks,{[Zn_(3)(cbbi)_(2)(bpe)(H_(2)O)_(6)]·2H_(2)O}_(n)(FCS-4)and{[Zn_(4)(OH)_(2)(cbbi)_(2)(bpee)(H_(2)O)_(4)]·2H_(2)O}_(n)(FCS-5),were prepared hydrothermally and employed as chemosensors for the ultra-sensitive detection of nitrofuran antibiotics.Interestingly,different spacers and flexibility in the nitrogen-donor ancillary ligands resulted in different topological structures and fluorescence properties.FCS-5 exhibited much better sensitivity for nitrofurazone and nitrofurantoin detection,with limits of detection(LOD)of 0.22 and 0.15 ppm,respectively.Furthermore,mechanism exploration indicated that photon-induced electron transfer plays a key role in the ultra-sensitive detection of nitrofuran antibiotics.展开更多
基金supported by the Excellent Young Scholar Foundation of Anhui Province(grant gxyqZD2017055)the Natural Science Foundation of Anhui Province(No.2008085QB80)+1 种基金the Natural Science Foundation for Colleges and Universities in Anhui Province(No.KJ2018A0107)the Distinguished Young Scholar Foundation of Anhui Polytechnic University(grant 2017JQ01).
文摘Fabrication of high-performance sensory materials for the ultra-sensitive detection of antibiotics in water is of significant importance for community health and environmental quality.Herein,two Zn(II)-based metal–organic frameworks,{[Zn_(3)(cbbi)_(2)(bpe)(H_(2)O)_(6)]·2H_(2)O}_(n)(FCS-4)and{[Zn_(4)(OH)_(2)(cbbi)_(2)(bpee)(H_(2)O)_(4)]·2H_(2)O}_(n)(FCS-5),were prepared hydrothermally and employed as chemosensors for the ultra-sensitive detection of nitrofuran antibiotics.Interestingly,different spacers and flexibility in the nitrogen-donor ancillary ligands resulted in different topological structures and fluorescence properties.FCS-5 exhibited much better sensitivity for nitrofurazone and nitrofurantoin detection,with limits of detection(LOD)of 0.22 and 0.15 ppm,respectively.Furthermore,mechanism exploration indicated that photon-induced electron transfer plays a key role in the ultra-sensitive detection of nitrofuran antibiotics.
