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- W2124772802 abstract "A metal–organic framework (MOF) {[Eu2(MFDA)2(HCOO)2(H2O)6]·H2O}n (1) (H2MFDA = 9,9-dimethylfluorene-2,7-dicarboxylic acid) has been solvothermally synthesized and structurally characterized. 1 possesses the three-dimensional pcu type rod-packing structure with one-dimensional rhombic channels. The framework of 1 can reversibly shrink/swell along the c axis upon partial/full release of the water molecules. Correspondingly, the rhombic channels become narrow/large and 1 transforms to narrow-pore 1a/large-pore 1b. 1, 1a and 1b have almost the same excitation and emission spectra with the strong characteristic red-light-emission of Eu(III). A high photoluminescence quantum yield of 77% and long luminescence lifetime of around 1.1 ms was observed for 1. The potential of 1b for Fe3+ ions and PA sensing was studied in DMF through the luminescence quenching experiments, which show 1b is a potential turn-off luminescent sensory material for the selective detection of Fe3+ ions and PA with detection limits of around 10−7 M for both of them. The fluorescence quenching mechanism for Fe3+ ions and PA was also investigated." @default.
- W2124772802 created "2016-06-24" @default.
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- W2124772802 date "2013-01-01" @default.
- W2124772802 modified "2023-10-17" @default.
- W2124772802 title "A flexible Eu(iii)-based metal–organic framework: turn-off luminescent sensor for the detection of Fe(iii) and picric acid" @default.
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- W2124772802 doi "https://doi.org/10.1039/c3dt51081f" @default.
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