Anionic lanthanide metal–organic frameworks with magnetic, fluorescence, and proton conductivity properties and selective adsorption of a cationic dye

Abstract

Two novel microporous anionic lanthanide metal-organic frameworks (Ln-MOFs), namely {[(CH3)2NH2][Ln(bptc)]•2H2O}n (Ln = Gd (1) and Dy (2), H4bptc = biphenyl-3,3’,5,5’-tetracarboxylic acid) with 4,8-connected new topology have been synthesized and structurally...

Homochiral Cu6Dy3 single-molecule magnets displaying proton conduction and a strong magneto-optical Faraday effect

“…As shown in Fig. 6, the Nyquist plots of R - 1 have a typical proton transfer characteristic, 55–66 consisting of a semicircle in the low-frequency region connecting with an inclined tail in the high-frequency region (Fig. 6a and b).…”

“…6c and Table S8†), which is consistent with the general regularity of solid-state proton conductivity increasing with the increase of relative humidity. 55–66…”

Multifunctionality of luminescent molecular nanomagnets based on lanthanide complexes

“…In these approaches, the weakest point appeared to be the design of magnetic anisotropy since all of these reported proton-conductive emissive Ln-SMMs demonstrate only moderate slow magnetic relaxation characteristics. [276][277][278]…”

Designed Construction of 2D Honeycomb Cationic MOF Materials for Selective Removal of Sulfonic Anionic Dyes

“…Due to their large specific surface areas and specific functional pore walls, MOFs can effectively interact with adsorbed guest molecules, and their properties have recently led to the application of MOFs for the adsorption of gases , and harmful substances. − Furthermore, MOFs with charged frameworks offer unique advantages in terms of adsorption, selection, and separation of host–guest interactions. For example, cationic MOFs can selectively adsorb anionic dyes through an ion exchange process. , Besides electrostatic interactions, pore adsorption and the driving force may include other types of intermolecular interactions between the MOF active site and guest dyes, such as hydrogen bonds, van der Waals interactions, etc.…”

“…For example, cationic MOFs can selectively adsorb anionic dyes through an ion exchange process. 23,24 Besides electrostatic interactions, pore adsorption 25 and the driving force may include other types of intermolecular interactions between the MOF active site and guest dyes, such as hydrogen bonds, van der Waals interactions, etc.…”