A multi-responsive luminescent sensor towards Fe3+ and acetone based on a Cd-containing metal–organic framework

A Cd-containing metal–organic framework (CdL), formula as {[Cd3(L)2(H2O)6]·1.5DMF}, has been synthesized under solvothermal condition by the reaction of 4,4′,4″-(methylsilanetriyl)tribenzoic acid (H3L) and Cd2+ ion. Single-crystal X-ray diffraction reveals that CdL displays a three-dimensional framework with 2-fold interpenetration and DMF molecules locate in the void space of the channels. A topological analysis of the framework indicates CdL is a 3,4-connected pto net. The photoluminescence properties of CdL are systematically studied in detail. Impressively, CdL shows excellent detection performance towards Fe3+ ion and acetone in the sensing experiments, which undoubtedly demonstrates the great potential of CdL as a highly selective multi-responsive luminescent sensor for the detection of organic solvents and metal ions.

Graphical abstractA Cd-containing metal–organic framework with a 2-fold interpenetrating three-dimensional network performs as a multi-responsive luminescent sensor, which displays excellent detection ability for recognition of organic solvents and metal ions, especially for Fe3+ ion and acetone.Figure optionsDownload full-size imageDownload as PowerPoint slide