Journal
MOLECULES
Volume 26, Issue 22, Pages -Publisher
MDPI
DOI: 10.3390/molecules26226942
Keywords
lanthanide-coordination complex; solvothermal synthesis; crystal structure; luminescence
Funding
- European Social Fund for Regional Development, Competitiveness Operational Programme Axis 1-Project Novel Porous Coordination Polymers with Organic Ligands of Variable Length for Gas Storage, POCPOLIG [P_37_707, 104810]
- Romanian Ministry of Education and Research, CNCS-UEFISCDI within PNCDI III [PN-III-P4-IDPCE-2020-1523]
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A series of neutral mononuclear lanthanide complexes were synthesized using a rigid bidentate ligand under solvothermal conditions, all of which showed isostructural compounds crystallized in a monoclinic space group. Solid-state luminescence measurements revealed that the [Eu(HL)(2)(NO3)(3)] complex exhibited characteristic emission peaks of Eu(III) ion at 593, 597, 615, and 651 nm.
A series of neutral mononuclear lanthanide complexes [Ln(HL)(2)(NO3)(3)] (Ln = La, Ce, Nd, Eu, Gd, Dy, Ho) with rigid bidentate ligand, HL (4 & PRIME;-(1H-imidazol-1-yl)biphenyl-4-carboxylic acid) were synthesized under solvothermal conditions. The coordination compounds have been characterized by infrared spectroscopy, thermogravimetry, powder X-ray diffraction and elemental analysis. According to X-ray diffraction, all the complexes are a series of isostructural compounds crystallized in the P2/n monoclinic space group. Additionally, solid-state luminescence measurements of all complexes show that [Eu(HL)(2)(NO3)(3)] complex displays the characteristic emission peaks of Eu(III) ion at 593, 597, 615, and 651 nm.
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