Chemical Sensors Based on Metal–Organic Frameworks

Abstract

Metal-organic frameworks (MOFs) as chemical sensors have developed rapidly in recent years. There have been plenty of papers concerning this field and the interest is still growing. The reason is the specific merits of MOFs can be utilized to enhance sensitivity and selectivity by various energy / charge transfers occurring among different ligands, ligand and metal centers such as from ligand to metal centers or metal center to ligand, as well as from MOF skeletons to guest species, etc.. This review intends to update the recent progress of various applications with different MOF-based sensors on the basis of their luminescent and electrochemical responses towards small molecules, gas molecules, ions (cation and anion), pH, humidity, temperature, as well as biomolecules. The MOF-based sensor based on different mechanism including luminescent response of "turn-on" and "turn-off" as well as electrochemical response was concluded and discussed. We expect this article to be a retrieve database for MOFs sensor through the examples and analyses as much as possible.