Our journey of developing dual‐emitting metal‐organic framework‐based fluorescent sensors

Abstract

Metal-organic frameworks (MOFs) provide broad prospects for the development of various types of luminescence sensors due to their versatile structures and tunable luminescence characteristics. In order to overcome the main drawbacks of singleemission luminescence sensors, such as being susceptible to the fluctuation of probe concentration and interference from external conditions, the ratiometric luminescent sensors utilizing the ratio between the intensity of two emssions within the same luminescent material, have been widely developed in recent years. We are committed to designing and developing luminescent ratiometric MOF-based sensors toward a wide range of targeted functional species. In this mini-review article, after the general description of ratiometric luminescent sensors, we have summarized our recent advances in the strategies for synthesizing dual-emitting MOFs and their applications for ratiometric sensing of temperature, pH, biomarkers and water, as well as the related sensing mechanisms.

Metal Hydrogen-Bonded Organic Framework as a pH Sensor for the Detection of Strong Acids

“…Metal–organic frameworks, as a class of porous materials composed of metal ions and organic linkers, have been paid attention in the field of molecule detection. − Generally, hydrogen bonds play important roles in the construction of materials. , Metal hydrogen-bonded organic frameworks (MHOFs) are constructed by metal and organic ligands, resulting in frameworks containing coordination bonds and hydrogen bonds. , For example, Santanu’s group reported MHOF self-assembly via charge-assisted H-bonding interactions between cationic metal imidazole molecules and anionic diene sulfonates/carboxylates. The MHOFs exhibited the ability of hyperproton conduction which broadens application of MHOFs .…”