Fluorescent material based on Al-MOF and phenazine groups for detection of water content in organic solvents

NH2-MIL-101(Al) material containing phenazine groups, i.e. 1 -metal-organic framework (MOF) has been prepared and characterized via FT-IR, PXRD, TGA, SEM and N-2 adsorption and desorption isotherm in this work. 1-MOF can exhibit emission peaks at 447 nm (in pure aqueous solvent) and 595 nm (in pure organic solvents) under 327 nm ultraviolet excitation, respectively. Based on this interesting feature, 1-MOF has been effectively used as a ratiometric fluorescent probe to detect water content in organic solvents. The luminescence color of 1-MOF changed obviously from red to blue with the increasing of water content in organic solvents, which can be observed by the naked eyes. The route to detect water content in organic solvents is fast, accurate and possessing great application potential.