Ultrafast and nanomolar TNP detection in water by fluorescent MOF

Examples of metal organic frameworks (MOFs) as multifunctional porous materials are in huge demand for their applications ranging from sensing, catalysis, gas/vapor sorption for storage and separation, drug delivery, etc.¹˒²For our continued contribution³ to this emerging field, we have designed a series of new ligands to make multifunctional MOFs in high yields for showcasing their versatile applications in several areas.In this presentation, based on a new electron-deficient triazinebased dicarboxylate ligand 5-((4,6-diamino-1,3,5-triazin-2-yl)amino)isophthalic acid (H₂ATAIA), a 3D MOF {[Cd(ATAIA)].4H₂O}n(1) has been synthesized at two different temperatures and structurally characterized by numerous analytical techniques.This amine-functionalized fluorescent MOF has been applied for highly selective, sensitive and ultrafast detection of picric acid in water with a limit of 0.94 nM (or 0.2 ppb).Furthermore, in a prototype experiment the response to TNP vapor by 1 has shown similar results.[1] (a) Yaghi, O.