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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 |
Files in This Item:
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Chain-like uranyl-coordination polymer as a bright green.png | 87.21 kB | image/png | View/Open |
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