Toward the rational design of lanthanide coordination polymers: a new topological approach.
The implementation of four bidentate building blocks into a high-denticity linker with a flexible spacer leads to a predisposed ligand that allows one to direct the self-assembly of 1D functional coordination polymers. This is illustrated by the assembly under mild conditions of the luminescent metal-organic framework [Tb(Htpabn)] . 14H2O infinity (1; H4tpabn = N,N,N',N'-tetrakis[(6-carboxypyridin-2-yl)methyl]butylenediamine). The X-ray crystal structure shows that the monoprotonated Htpabn binds two equivalent lanthanide ions to form a one-directional staircase chain. The high ligand denticity prevents solvent coordination and leads to a high luminescence quantum yield (Q = 39%), which is maintained after solvent removal.
Marchal
Claire
C
Laboratoire de Reconnaissance Ionique et Chimie de Coordination, Service de Chimie Inorganique et Biologique, CEA/DSM/DRFMC, CEA-Grenoble, Grenoble Cedex 09, France.
Filinchuk
Yaroslav
Y
Imbert
Daniel
D
Bünzli
Jean-Claude G
JC
Mazzanti
Marinella
M