Yin, Jie; Zhang, Jinrui; Wang, Chao; Lv, Naixia; Jiang, Wei; Liu, Hui; Li, Hongping; Zhu, Wenshuai; Li, Huaming; Ji, Hongbing published their research in Journal of Molecular Liquids in 2021. The article was titled 《Theoretical insights into CO2/N2 selectivity of the porous ionic liquids constructed by ion-dipole interactions》.HPLC of Formula: 33100-27-5 The article contains the following contents:
Porous liquids, a new class of materials, containing solid pores and liquid properties, have greatly aroused attention. In terms of gas absorption, porous liquids exhibit excellent advantages. Nevertheless, a variety of reports still lack the understanding of its absorption mechanism at the mol. level. Herein, we have figured out the factors contributing to the formation of porous liquids made of porous organic cages that can be dissolved in the crown ether, and the absorption mechanism of carbon dioxide, as well as CO2/N2 selectivity. Through charge and Wiberg index anal., the results show that crown ethers can interact with alkali metals to form alkali metal complexes by ion-dipole interactions, the dominant driving force of which is electrostatic interaction rather than coordination effect. Besides, the metal complexes should be regarded as a whole entity, which increases the steric hindrance of the cations and greatly reduces the probability of the crown ether blocking the cavity. The porous organic cage does provide unoccupied pores for gas storage. Furthermore, compared with N2, cages prefer to absorb CO2 mainly through hydrogen bonding. It is hoped that this work can facilitate the design and synthesis of porous liquids for gas absorption and selectivity. The results came from multiple reactions, including the reaction of 1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5HPLC of Formula: 33100-27-5)
1,4,7,10,13-Pentaoxacyclopentadecane(cas: 33100-27-5) is a member of crown ether Ligands. Crown-ethers are macrocyclic polyethers capable of forming host-guest complexes, especially with inorganic and organic cations. Crown-ethers can incorporate protonated primary amine compounds by formation of ion-dipole bonds with the oxygen atoms of the chiral selector. Crown-ethers have been widely used for the separation of several pharmaceuticals both in aqueous and non-aqueous media. HPLC of Formula: 33100-27-5
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem