Zinc metal-organic framework with high-density free carboxyl oxygen functionalized pore walls for targeted electrochemical sensing of paracetamol
Based on the rigid benzene polycarboxylic acid H4BPTC(biphenyl-3,3',5,5'-tetracarboxylic acid),a 3D rigid zinc-based metal-organic framework with high-density free carboxyl oxygen modified pore walls,{[Zn2(BPTC)(H2O)(DMF)2]·DMF·H2O}n(SXNU-5-Zn),has been constructed.SXNU-5-Zn exhibited good acid-base stability within a pH range of 3-8 and excellent thermal stability.An electrochemical sensor,SXNU-5-Zn/GCE,based on a pure MOF material was constructed,which can detect paracetamol(AC)with high sensitivity and selectivity.The linear detection range spans from 0.02 to 765 μmol·L-1,with a limit of detection as low as 0.013 8 μmol·L-1(S/N=3).Furthermore,the prepared SXNU-5-Zn/GCE sensor has been successfully utilized to determine the AC content in compound acetaminophen tablets as an actual sample.CCDC:2320686.
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