A functionalized Eu3+ metal-organic framework for selective fluorescent detection of pyrene
A functional 3D lanthanide metal-organic framework(Eu-4L)was successfully designed and synthesized by solvothermal method.The ligand of Eu-4L is a kind of diphenylamine tetracarboxylic acid derivative(named H4L).The specific surface area of Eu-4L was high,which made Eu-4L have an excellent 3D structure.Eu-4L had good thermostability and can remain,stable in water of pH from 3 to 11.Eu-4L can be used as a fluorescent probe for sensing pyrene.The limit of detection of Eu-4L for sensing pyrene was 5 μmol·L-1,which displays high sensitivity.Eu-4L is also a kind of recyclable material.The fluorescence sensing mechanism of Eu-4L for sensing pyrene belongs to the static mechanism.Moreover,the selectivity and competition of Eu-4L are also discussed.CCDC:2268274.
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