Luminescent lanthanide complexes with 4-acetamidobenzoate: Synthesis, supramolecular assembly via hydrogen bonds, crystal structures and photoluminescence

Journal Article · Fri Jul 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.05.018· OSTI ID:21580129

Xia, Yin ^[1]; Zhihong, Wang; Shengrun, Zheng; Jingbo, Tan ^[1]

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1. Institute of Special Materials and School of Chemistry and Environment, South China Normal University, Guangzhou 510006 (China)

Four new luminescent complexes, namely, [Eu(aba){sub 2}(NO{sub 3})(C{sub 2}H{sub 5}OH){sub 2}] (1), [Eu(aba){sub 3}(H{sub 2}O){sub 2}].0.5 (4, 4'-bpy).2H{sub 2}O (2), [Eu{sub 2}(aba){sub 4}(2, 2'-bpy){sub 2}(NO{sub 3}){sub 2}].4H{sub 2}O (3) and [Tb{sub 2}(aba){sub 4}(phen){sub 2}(NO{sub 3}){sub 2}].2C{sub 2}H{sub 5}OH (4) were obtained by treating Ln(NO{sub 3}){sub 3}.6H{sub 2}O and 4-acetamidobenzoic acid (Haba) with different coligands (4, 4'-bpy=4, 4'-bipyridine, 2, 2'-bpy=2, 2'-bipyridine, and phen=1, 10-phenanthroline). They exhibit 1D chains (1-2) and dimeric structures (3-4), respectively. This structural variation is mainly attributed to the change of coligands and various coordination modes of aba molecules. Moreover, the coordination units are further connected via hydrogen bonds to form 2D even 3D supramolecular networks. These complexes show characteristic emissions in the visible region at room temperature. In addition, thermal behaviors of four complexes have been investigated under air atmosphere. The relationship between the structures and physical properties has been discussed. - Graphical abstract: Structure variation of four complexes is attributed to the change of coligands and various coordination modes of aba molecules. Moreover, they show characteristic emissions in the visible region. Highlights: > Auxiliary ligands have played the crucial roles on the structures of the resulting complexes. > Isolated structure units are further assembled via H-bonds to form supramolecular networks. > These solid-state complexes exhibit strong, characteristic emissions in the visible region.

• OSTI ID: 21580129
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 7 Vol. 184; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
AROMATICS
AZAARENES
AZINES
BIPYRIDINES
CHALCOGENIDES
COMPLEXES
CRYSTAL STRUCTURE
ELEMENTS
EMISSION
HETEROCYCLIC COMPOUNDS
HYDROGEN
LIGANDS
LUMINESCENCE
NITRATES
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHENANTHROLINES
PHOTOLUMINESCENCE
PHOTON EMISSION
PHYSICAL PROPERTIES
PYRIDINES
RARE EARTH COMPLEXES
SOLIDS
SYNTHESIS