Chronic fluoride(F^(-))toxicity has been endemic at least 25 countries around the world due to prolonged consumption of contaminated water,posing a great threat to human health.Rapid and convenient visual methods for ...Chronic fluoride(F^(-))toxicity has been endemic at least 25 countries around the world due to prolonged consumption of contaminated water,posing a great threat to human health.Rapid and convenient visual methods for F^(-)ion detection are hence needed for public safety.In this work,we show a series of novel mixed lanthanide-organic frameworks,namely{[Eu_(x)Tb_(2-x)(BIPA)_(3)(DMF)(H_(2)O)_(3)]·2DMF·3H_(2)O}_(n)(H_(2)BIPA=5-boronoisophthalic acid;x=0,0.12,0.28,0.30,0.68,1.04 and 2 for 1-7,respectively),with abundant recognition sites of borono groups for convenient and visual detection of excess F^(-)ions in river water.Wide linear range for F^(-)ion detection can be obtained through systematic optimization of sensing materials.A rare double dynamic sensing process between F^(-)ions and lanthanide-organic frameworks was clearly revealed though single-crystal X-ray diffraction and transient fluorescence techniques.展开更多
基金supported by the National Natural Science Foundation of China(grant number 22121005)open-ended fund of Hubei Key Laboratory of Pollutant Analysis&Reuse Technology(grant number PA230212)talent introduction project of Hubei Normal University(grant number HS2023RC072).
文摘Chronic fluoride(F^(-))toxicity has been endemic at least 25 countries around the world due to prolonged consumption of contaminated water,posing a great threat to human health.Rapid and convenient visual methods for F^(-)ion detection are hence needed for public safety.In this work,we show a series of novel mixed lanthanide-organic frameworks,namely{[Eu_(x)Tb_(2-x)(BIPA)_(3)(DMF)(H_(2)O)_(3)]·2DMF·3H_(2)O}_(n)(H_(2)BIPA=5-boronoisophthalic acid;x=0,0.12,0.28,0.30,0.68,1.04 and 2 for 1-7,respectively),with abundant recognition sites of borono groups for convenient and visual detection of excess F^(-)ions in river water.Wide linear range for F^(-)ion detection can be obtained through systematic optimization of sensing materials.A rare double dynamic sensing process between F^(-)ions and lanthanide-organic frameworks was clearly revealed though single-crystal X-ray diffraction and transient fluorescence techniques.
