Abstract
A lanthanide-organic framework constructed from a new π-electron rich ligand 5,5′-(9H-carbazole-3,6-diyl)diisophthalic acid (H4L) and Tb(NO3)3·6H2O, namely, [(CH3)2NH2][TbL] (1), has been synthesized under solvothermal condition. X-ray diffraction analysis reveals that complex 1 exhibits a 3D porous framework featuring a (4,8)-connected sqc net. The solid sample of 1 exhibits strong green fluorescence in the visible region upon excitation at 354nm. The fine grinding particles of 1 dispersed in ethanol shows good sensitivity for picric acid (PA), which can be reused at least five times for detecting PA. The good sensitivity and recyclability of 1 make it a potential fluorescent sensor for explosives detection.
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