Temperature- and Stoichiometry-Controlled Dimensionality in a Magnesium 4,5-Imidazoledicarboxylate System with Strong Hydrophilic Pore Surfaces

Abstract

1D, 2D, and 3D three metal-organic hybrid frameworks of Mg (II) have been synthesized using 4,5-imidazoledicarboxylic acid (H 3idc) with control of the temperature and stoichiometry in a hydrothermal technique. All of the frameworks show high thermal stability, and frameworks 1D and 3D provide highly hydrophilic pore surfaces, correlated by the selective sorption of water molecules over the organic vapor and other gases like N 2 and CO 2.

Porous coordination polymers based on three planar rigid ligands

“…Considering the small density of PCPs with alkalineearth metal ions, which are beneficial for hydrogen and methane storage, Maji et al constructed three coordination polymers using Mg(II) and H 3 IDC as building blocks, in which two of them are PCPs (Figure 4) [32]. The results of thermogravimetric analysis (TGA) indicate that the frameworks of three coordination polymers can be stable up to 220, 385 and 500 °C, respectively.…”

Temperature dependent structural variation from 2D supramolecular network to 3D interpenetrated metal–organic framework: In situ cleavage of S–S and C–S bonds

“…Especially, temperature of the synthesis plays a significant role on the crystal structure dimensionality and the topology of the resulting frameworks. Therefore, systematic investigation on the temperature dependence of framework dimensionalities has gained much attention [21][22][23][24]. Generally, higher reaction temperature increases the dimensionality of the framework due to the increased tendencies of M-O-M linkage formation [25].…”

Ionothermal synthesis and crystal structure of a magnesium metal-organic framework

“…Divalent magnesium Mg 2+ has similarities with the first-raw divalent transition metal ions in ionic radius, hydration energy and coordination mode. However, compared to the numerous transition metal MOFs, thus far only a few magnesium MOFs have been reported and most of them were predominantly synthesized under hydro(solvo)thermal conditions or via room temperature crystallization [11][12][13][14][15]. On the other hand, ionothermal synthesis, using ionic liquids (ILs) as reaction medias and templates or charge-compensating agents, has been shown to be a novel and highly promising synthetic method for MOFs [16][17][18][19][20].…”