Controlled Growth of Cyano-Bridged Coordination Polymers into Layered Double Hydroxides

The controlled growth of cyano-bridged coordination polymers was developed by using layered double hydroxides (LDH) as bidimensional host structures. A series of nanocomposites [B0.66Al0.33(OH)2]0.33+/[MFe(CN)6]− (B = Mg, Ni; M = Ni, Co) were obtained by step-by-step coordination of hexacyanoferrate building blocks and bivalent metal ions into the interlayer domain of the matrix. The obtained nanocomposites were studied by infrared (IR), UV−vis spectroscopy, X-ray diffraction, and magnetic measurements, which reveal the presence of cyano-bridged coordination polymers [MFe(CN)6]− intercalated into the LDH. [MFe(CN)6]− confined into diamagnetic [Mg0.66Al0.33(OH)2]0.33+ and magnetic [Ni0.66Al0.33(OH)2]0.33+ LDH layers show the presence of a spin-glass behavior in which the magnetic parameters depend on the nature of both the confined coordination polymer and the LDH host.