TY - JOUR
T1 - Topological diversities and luminescent properties of lanthanide metal-organic frameworks based on a tetracarboxylate ligand
AU - Zhang, Jian
AU - Zheng, Bing
AU - Zhao, Tingting
AU - Li, Guanghua
AU - Huo, Qisheng
AU - Liu, Yunling
PY - 2014/5/7
Y1 - 2014/5/7
N2 - The reaction of 5,5′-(1,2-ethynediyl)bis(1,3-benzenedicarboxylic acid) (H4EBDC) and dinuclear lanthanide building blocks generates five new three-dimensional lanthanide metal-organic frameworks (Ln-MOFs) with different topologies under mild conditions. Isomorphic compounds |C 2H7N|[Ln2(EBDC)(NO3) 2(C3H7NO)4] [Ln = Eu (1), Tb (2), or Er (3)] crystallize in monoclinic symmetry space group C2/c and adopt PtS topology. Under modified conditions, new phases |(NO3) 0.5(H3O)0.5|[Yb2(EBDC)(NO 3)2(C3H7NO)4] (space group C2/c, compound 4) and |(H3O)2(C3H 7NO)2.5|[Eu2(EBDC)2(C 3H7NO)(H2O)] (space group P21/c, compound 5) are obtained. In 4, both of the inorganic and organic building blocks can be simplified into a four-coordinate node, forming an Lvt topological network. For compound 5, the dinuclear Ln unit works as an 8-connected node and the organic ligand serves as a 4-connected node; these two kinds of nodes connect and then present an unprecedented (4,8)-connected topology. The aforementioned Ln-MOFs are all characterized by elemental analysis, infrared spectroscopy, and thermogravimetric analysis, and their luminescent properties have been studied, showing emission characteristic of inorganic species at room temperature.
AB - The reaction of 5,5′-(1,2-ethynediyl)bis(1,3-benzenedicarboxylic acid) (H4EBDC) and dinuclear lanthanide building blocks generates five new three-dimensional lanthanide metal-organic frameworks (Ln-MOFs) with different topologies under mild conditions. Isomorphic compounds |C 2H7N|[Ln2(EBDC)(NO3) 2(C3H7NO)4] [Ln = Eu (1), Tb (2), or Er (3)] crystallize in monoclinic symmetry space group C2/c and adopt PtS topology. Under modified conditions, new phases |(NO3) 0.5(H3O)0.5|[Yb2(EBDC)(NO 3)2(C3H7NO)4] (space group C2/c, compound 4) and |(H3O)2(C3H 7NO)2.5|[Eu2(EBDC)2(C 3H7NO)(H2O)] (space group P21/c, compound 5) are obtained. In 4, both of the inorganic and organic building blocks can be simplified into a four-coordinate node, forming an Lvt topological network. For compound 5, the dinuclear Ln unit works as an 8-connected node and the organic ligand serves as a 4-connected node; these two kinds of nodes connect and then present an unprecedented (4,8)-connected topology. The aforementioned Ln-MOFs are all characterized by elemental analysis, infrared spectroscopy, and thermogravimetric analysis, and their luminescent properties have been studied, showing emission characteristic of inorganic species at room temperature.
UR - http://www.scopus.com/inward/record.url?scp=84900305401&partnerID=8YFLogxK
U2 - 10.1021/cg500114k
DO - 10.1021/cg500114k
M3 - 文章
AN - SCOPUS:84900305401
SN - 1528-7483
VL - 14
SP - 2394
EP - 2400
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 5
ER -