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Lanthanide Complexes Assembled from 3‐Fluorophthalate and 1,10‐Phenanthroline: Syntheses, Crystal Structure, Photoluminescence, and White‐Light Emission
Author(s) -
Cha YuE,
Li Xia,
Ma Dou,
Huo Rui
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201402099
Subject(s) - chemistry , denticity , lanthanide , luminescence , crystal structure , crystallography , phenanthroline , bridging ligand , molecule , photoluminescence , ligand (biochemistry) , ion , fluorescence , stereochemistry , chelation , inorganic chemistry , receptor , biochemistry , physics , optoelectronics , organic chemistry , quantum mechanics , optics
Two different crystal forms, [Ln 4 (Fpht) 6 (phen) 6 (H 2 O) 4 ] · n H 2 O (Ln = Eu 1 , n = 14; Tb 2 , n = 12) and [Ln(Fpht)(HFpht)(phen)(H 2 O)] (Ln = La 3 , Eu 4 , Tb 5 ) were obtained from the one‐pot reaction of Ln III ions with 3‐fluorophthalic acid (H 2 Fpht) and 1,10‐phenanthroline (phen). Complexes 1 and 2 are centrosymmetric tetranuclear molecules with two crystallographically different Ln III ion environments, [Ln(1)O 6 N 2 ] and [Ln(2)O 4 N 4 ]. The complexes have a tridentate bridging Fpht ligand and a bidentate terminal Fpht ligand. Complexes 3 – 5 show 2D networks with [LnO 7 N 2 ] polyhedra. There are two kinds of ligands, Fpht and HFpht, which adopt chelating‐bridging/monodentate and bidentate‐bridging coordination modes, respectively. The La III complex shows ligand‐centered fluorescence. Eu III and Tb III complexes display red 5 D 0 → 7 F 0–4 and green 5 D 4 → 7 F 6–2 characteristic luminescence, respectively. Intriguingly, white‐light emission was produced when Eu III and Tb III were codoped into the 2D La III complex.