A new stable Cd(II)-framework for sensitive and selective detection of Cu2 + ions

• A new metal–organic framework was synthesized and structurally characterized.
• This compound displays high thermal stability and excellent water resistance.
• This compound exhibits highly selective and sensitive quenching effect toward Cu2 + in aqueous solutions.

A new water-stable 3D metal–organic framework (MOF), [Cd2L2]·NMP·MeOH (1, H2L = 2-(3,5-dimethyl-1H-pyrazol-4-yl)-1,3-dioxoisoindoline-5,6-dicarboxylic acid, NMP = 1-methyl-2-pyrrolidinone) has been solvothermally synthesized and structurally characterized. 1 exhibits a 3D open-framework with a 2D metallic plane pillared by L2 − fragments. Meanwhile, luminescent studies indicate that the luminescence intensity of 1 was strongly dependent on different metal ions. Most interestingly, 1 exhibited significantly quenching effect toward Cu2 +, which implies that it may be used as a luminescent probe for the detection of Cu2 +.

A new water-stable metal–organic framework (1) was solvothermally synthesized and structurally characterized. It exhibits a 3D open-framework with a 2D metallic plane pillared by L2 − fragments. Luminescent studies indicate that 1 exhibits significantly high specific, selective and sensitive quenching effect toward Cu2 +.Figure optionsDownload as PowerPoint slide