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Synthesis, Crystal Structures, and Luminescent Properties of Noninterpenetrating (6,3) Type Network Lanthanide Metal–Organic Frameworks Assembled by a New Semirigid Bridging Ligand
Author(s) -
Wang Qin,
Tang KuanZhen,
Liu WeiSheng,
Tang Yu,
Tan MinYu
Publication year - 2010
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.201000664
Subject(s) - lanthanide , chemistry , supramolecular chemistry , crystallography , crystal structure , ligand (biochemistry) , bridging ligand , molecule , luminescence , metal organic framework , intermolecular force , metal , hydrogen bond , ion , stereochemistry , organic chemistry , biochemistry , physics , receptor , optoelectronics , adsorption
A series of lanthanide metal–organic frameworks (MOFs) possessing 4f homometallic 2D noninterpenetrating (6,3) honeycomb topological network structures with lanthanide atoms acting as three‐connected centers have been assembled by using a semirigid bridging ligand with lanthanide nitrates, namely [{Ln 2 (NO 3 ) 6 L 3 } · (H 2 O) 2 · (CHCl 3 )] n (Ln = Pr, Nd, Sm, Eu, Gd, Tb, Dy, Er; L = 2,5‐dimethyl‐1,4‐bis[{(2′‐benzylaminoformyl)phenoxy}methyl]benzene. The coordination layers are linked by intermolecular hydrogen bonds to form a 3D cage structure with 1D supramolecular channels along the c axis, in which chloroform and lattice water molecules are located to stabilize the structure. Under specific excitation, the Sm III , Eu III , Tb III , and Dy III MOFs exhibit characteristic emissions. The lowest triplet‐state energy level of the ligand indicates that the energy level of the ligand matches better to the resonance levels of Tb III and Dy III rather than Sm III and Eu III ions.