首页|A luminescence coordination polymer for long-term monitoring of antibiotic aztreonam in aqueous media
A luminescence coordination polymer for long-term monitoring of antibiotic aztreonam in aqueous media
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NSTL
The specific recognition and long-term continuously monitoring of antibiotics in water is extremely i ecosystem and human health.Herein,we report a two-dimensional blue photoluminescence polymer CdL·H2O(1)based on 9H-carbazole-2,7-dicarboxylic acid(H2L),emission of which cou cantly quenched only by aztreonam(ATM)among thirteen antibiotics in aqueous media.By the titration experiments,the linear Stern-Volmer plot between emission intensities of 1 and ATM cc was observed in the concentration range of 20-100 μM with K_(sv)of 1.12×10~4 M~(-1).Besides high se sensitivity,good anti-interference ability and repeatability for ATM detection were also confirmed,we immersed 1 into the ATM solution for 60 days,and during this period the fluorescence quenchin of ATM for 1 almost unchanged.This result indicates that 1 could be used as a stable high-perfo rescence sensing material for the specific recognition and long-term continuously monitoring of ATI is also the first fluorescent material that can detect ATM in water.The fluorescence quenching me attributed to photoinduced electron transfer(PET)from 1 to ATM.
Key Laboratory for Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors,Institute of Advanced Materials(IAM),Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM),Nanjing University of Posts & Telecommunications,Nanjing,210023,China
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