ABSTRACT
Metal-organic frameworks (MOFs) are the fastest growing and engrossing category of nano-porous materials. In the last few decades, MOFs have received extensive attention due to their excellent tunable properties, unique design, and various applications. Importantly, sensing applications of MOFs have been effectively integrated and explored due to tunable porosity, larger surface area per gram, diversity in structure, selective adsorption of specific gases into tailor-made pockets within the structure. The development of MOF-based sensors offers high selectivity, sensitivity, low detection limit (LOD), fast responding, and fully reversible with excellent luminescence emission properties for monitoring hazardous pollutants. Nevertheless, there are also some challenges towards developing completely MOF biosensors MOFs can also be coupled with other functional materials as precursors, allowing the facile fabrication of different nanostructures such as metal oxides and carbon composites. Nevertheless, there are also some challenges towards developing completely MOF biosensors. In this chapter, we explore current challenges and future directions for MOFs as smart sensing materials.
