Journal
DALTON TRANSACTIONS
Volume 44, Issue 29, Pages 13340-13346Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5dt01065a
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Funding
- National Natural Science Foundation of China [91122029, 21471064]
- State Basic Research Project of China [2011CB808703]
- New Century Excellent Talents in University [NCET-11-0929]
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A microporous lanthanum metal-organic framework [La(TPT)(DMSO)(2)]center dot H2O (La-MOF (1)), has been synthesized using a rigid unsymmetrical tricarboxylate ligand of p-terphenyl-3,4'', 5-tricarboxylic acid (H3TPT). The structure of 1 is constructed by bi-nuclear lanthanum clusters and fully deprotonated TPT3-ligands, which can be simplified into a 3,6-connected flu-3,6-C2/c topology with a point symbol of (4(4).6)(2)(4.6(2).8(7).10(2)). The p-electron rich ligand H3TPT enables 1 to have blue luminescence when excited at 342 nm at ambient temperature. Meanwhile, 1 exhibits the selective detection of picric acid (PA) and Fe3+ ions in ethanol solution over other nitroaromatic compounds and metal ions. The high quenching efficiency and selectivity of 1 makes it a potential bi-functional chemosensor for both PA and Fe3+ ions.
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