Self-Assembly and Complexation of Cellulose/Ionic Liquid at High Cellulose Concentration: Anion Dependence was written by Endo, Takatsugu;Yoshida, Shota;Kimura, Yoshifumi. And the article was included in Crystal Growth & Design in 2020.COA of Formula: C7H13ClN2 This article mentions the following:
The authors studied the state of cellulose that was dissolved in ionic liquid (IL) consisting of 1-Me-3-propylimdiazolium cation ([C3mim]+) paired with acetate ([OAc]–), dimethylphospate ([DMP]–), or chloride (Cl–) anions using wide-angle x-ray scattering (WAXS), particularly focusing on the high cellulose concentration region (10-80 mol %). The anion species considerably altered the WAXS pattern of the cellulose/IL mixtures [C3mim][OAc] deconstructed cellulose crystal structure up to the 40 mol % cellulose concentration Similar to the previously reported cellulose/1-Et-3-methylimidazolium acetate system ([C2mim][OAc]), the mixtures of cellulose/[C3mim][OAc] at 25-60 mol % induced a low angle peak, which corresponds to the self-assembly of the system. For [C3mim][DMP] and [C3mim]Cl mixtures, sharp Bragg peaks were observed, which demonstrated the formation of the complex crystal of cellulose/IL. The presence of moisture eventually deconstructed these crystal structures; while for [C3mim]Cl, an intermediate complex crystal containing H2O mols. emerged. This work contributes to understanding the cellulose state dissolved in IL at high concentrations and to the development of crystal engineering on this most abundant and recalcitrant biopolymer. Complex crystals formed when cellulose was simply mixed with a certain ionic liquid at high concentrations The complex crystals are sensitive to H2O; they transformed into a different complex crystal or an amorphous state, depending on anion types used and H2O concentration contained. In the experiment, the researchers used many compounds, for example, 1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8COA of Formula: C7H13ClN2).
1-Methyl-3-propylimidazolium Chloride (cas: 79917-89-8) belongs to imidazole derivatives. The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . In contrast, the solubility of benzimidazoles in alcohols (C3–C6) is higher than in water and generally decreases with a Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).COA of Formula: C7H13ClN2
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem