publications

Zeolite-like Metal-organic Framework (MOF) Encaged Pt(II)-porphyrin for Anion-selective Sensing

Zeolite-like Metal-organic Framework (MOF) Encaged Pt(II)-porphyrin for Anion-selective Sensing
Dilshad Masih, Valeriya Chernikova, Osama Shekhah, Mohamed Eddaoudi, Omar F. Mohammed
J. Phys. Chem. C, 2018, 122 (11), pp 6493–6498
Dilshad Masih, Valeriya Chernikova, Osama Shekhah, Mohamed Eddaoudi, Omar F. Mohammed
platinum-metallated porphyrin, biosensors
2018

The selectivity and sensitivity of sensors are of great interest to the materials chemistry community, and a lot of effort is now devoted to improving these characteristics. More specifically, the selective sensing of anions is one of the largest challenges impeding the sensing-research area due to their similar physical and chemical behaviours. In this work, platinum-metallated porphyrin (Pt(II)TMPyP) was successfully encapsulated in a rho-type zeolite-like metal-organic framework (rho-ZMOF) and applied for anion-selective sensing. The sensing activity and selectivity of the MOF-encaged Pt(II)TMPyP for various anions in aqueous and methanolic media were compared to that of the free (non-encapsulated) Pt(II)TMPyP. While the photoinduced triplet-state electron transfer of Pt(II)TMPyP showed a very low detection limit for anions with no selectivity, the Pt(II)TMPyP encapsulated in the rho-ZMOF framework possessed a unique chemical structure to overcome such limitations. This new approach has the potential for use in other complex sensing applications, including biosensors, which require ion selectivity.

DOI: 10.1021/acsami.7b19282