Pyrene Tetraphosphonate-Based Metal-Organic Framework: Structure and Photoluminescence

authors	Firmino, ADG; Mendes, RF; Ananias, D; Figueira, F; Tome, JPC; Rocha, J; Paz, FAA
nationality	International
journal	EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
author keywords	Metal-organic frameworks; Lanthanides; Phosphonates; Luminescence; Hydrothermal synthesis
keywords	MOFS
abstract	The synthesis of pyrene-1,3,6,8-tetrayltetrakis(phosphonic acid) (H(8)ptp) and its use in the preparation of a new isotypical family of Metal-Organic Frameworks (MOF) using oxalic acid as secondary linker are reported. This new family, generally formulated as [Ln(2)(H(4)ptp)(ox)(H2O)(6)]center dot 5H(2)O [where Ln(3+)= Ce3+(1Ce), Pr3+(1Pr), Nd3+(1Nd), Sm3+(1Sm), Eu3+(1Eu), Gd3+(1Gd), Tb3+(1Tb) and Dy3+(1Dy)], were prepared under hydrothermal conditions and fully characterized using different techniques. The photoluminescence properties of1Euwere studied, showing emission lifetimes of 0.27 +/- 0.01 ms and 0.33 +/- 0.01 ms at 294 K and 12 K, respectively. This family of materials, based on a fully hydrolysed tetraphosphonate pyrene ligand, constitutes the first example of MOFs obtained using this highly fluorescent organic ligand.
publisher	WILEY-V C H VERLAG GMBH
issn	1434-1948
isbn	1099-0682
year published	2020
volume	2020
issue	37
beginning page	3565
ending page	3572
digital object identifier (doi)	10.1002/ejic.202000726
web of science category	Chemistry, Inorganic & Nuclear
subject category	Chemistry
unique article identifier	WOS:000572180400001