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Title: Synthetic, structural, and luminescence study of uranyl coordination polymers containing chelating terpyridine and trispyridyltriazine ligands

Journal Article · · CrystEngComm
DOI:https://doi.org/10.1039/c5ce00984g· OSTI ID:1386741
 [1];  [2];  [1]
  1. George Washington Univ., Washington, DC (United States)
  2. Cardiff Univ., Cardiff (United Kingdom)

In this work, seven uranyl coordination polymers [(UO2)(BrC8H3O4)(C15H11N3)] (1), [(UO2)(ClC8H3O4)(C15H11N3)] (2), [(UO2)(BrC8H3O4)(C18H12N6)]·H2O (3), [(UO2)(ClC8H3O4)(C18H12N6)]·2H2O (4), [(UO2)(C8H3IO4)(C18H12N6)]·2C3H7O (5), [(UO2)(C9H6O4)(C18H12N6)]·H2O (6), and [(UO2)(C6H2O4S)(C18H12N6)]·2H2O (7) containing N-donor ligands 2,2':6',2''-terpyridine (TPY) and 2,4,6-tripyridyl s-triazine (TPTZ); and O-donor linkers thiophene 2,5-dicarboxylic acid (TDC) and X-1,4-benzene dicarboxylic acid (X-BDC, where X = Me, Cl, Br, I) were synthesized and characterized using single crystal X-ray diffraction (SC-XRD), powder X-ray diffraction (PXRD), and fluorescence spectroscopy. Each compound crystallizes as binuclear pseudo dimers containing a UO22+ pentagonal bipyramidal primary building unit. Fluorescence spectra of 1–4, and 6–7 show characteristic UO22+ emission whereas 5 is non-emissive. Red shifts within the emission of 1–4 are noted as a function of N-donor ligands TPY and TPTZ whereas emission shifts are not observed in TPTZ bearing compounds (3, 4, 6, 7) containing different O-donor linkers. Luminescent lifetimes of 1–7 were obtained and fitted with either bi-exponential or tri-exponential components.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Materials Science of Actinides (MSA)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0001089
OSTI ID:
1386741
Journal Information:
CrystEngComm, Vol. 17, Issue 32; Related Information: MSA partners with University of Notre Dame (lead); University of California, Davis; Florida State University; George Washington University; University of Michigan; University of Minnesota; Oak Ridge National Laboratory; Oregon state University; Rensselaer Polytechnic Institute; Savannah River National Laboratory; ISSN 1466-8033
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 28 works
Citation information provided by
Web of Science

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The structural evolution and tunable photoluminescence of f-element bearing coordination polymers of the 2,4,6-tri-α-pyridyl-1,3,5-triazine ligand journal January 2019
Synthesis and crystal structures of two new uranyl coordination compounds obtained in aqueous solutions of 1-butyl-2,3-dimethylimidazolium chloride journal May 2018
Crystal structure of a hydroxo-bridged dimeric uranyl complex with a 2,2′:6′,2″-terpyridine ligand journal January 2017
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Synthesis and crystal structures of two new uranyl coordination compounds obtained in aqueous solutions of 1-butyl-2,3-dimethylimidazolium chloride text January 2018
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