Please use this identifier to cite or link to this item: http://localhost:8080/xmlui/handle/20.500.12421/4531
Title: Chain-like uranyl-coordination polymer as a bright green light emitter for sensing and sunlight driven photocatalysis
Authors: Gomez, Germán E.
Onna, Diego
D'Vries, Richard Fernando
Barja, Beatriz C.
Alcides Ellena, Javier
Narda, Griselda Edith
Soler-Illia, G. J.A.A.
Keywords: Atoms
Crystallites
Ligands
Low temperature effects
1 ,10-phenanthroline
Coordination Polymers
Green light emitters
Low-temperature measurements
Water treatment
Issue Date: 2-Jul-2020
Publisher: Royal Society of Chemistry
Abstract: A new uranyl-coordination polymer (UCP) has been solvothermally synthesized employing succinic acid and 1,10-phenanthroline (phen) as ligands. The obtained compound with the formula [(UO2)2(phen)(succ)0.5(OH)(O)4(μ3-O)(H2O)]·H2O (UNSL-1) is classified as 1D chains showing I0O1 connectivity. Also, the asymmetric unit is composed of two hepta-coordinated uranyl centers: U1 is surrounded by five oxygen atoms from succinate, while U2 is surrounded by two nitrogen atoms from phen and three oxygen atoms from succinate ([U1O7] and [U2N2O5]). The secondary-building unit (SBU) is composed of a sharing edge tetrameric cluster linked with a succinate ligand in the [−1 0 1] direction. Besides, the chains are reinforced by π–π stacking interactions between the aromatic rings of the phen molecules to conform a 2D supramolecular arrangement. Moreover, photoluminescence experiments show strong green emission consistent with uranyl crystalline materials. Photophysical characterization was completed via low-temperature measurements (77 K) and recording the decay emission for calculating the lifetime (τobs) value. Regarding its multifunctional properties, a cation-sensing performance was achieved showing selective quenching toward iron ions in aqueous media. Finally, UNSL-1 was tested as an efficient water photocatalyst for dye degradation under simulated sunlight irradiation, exhibiting promising results for organic-pollutant water remediation.
URI: http://repository.usc.edu.co/handle/20.500.12421/4531
ISSN: 2050-7534
Appears in Collections:Artículos Científicos

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