Tuning the structure and solubility of nanojars by peripheral ligand substitution, leading to unprecedented liquid–liquid extraction of the carbonate ion from water into aliphatic solvents
作者:Basil M. Ahmed、Brice Calco、Gellert Mezei
DOI:10.1039/c6dt00847j
日期:——
pyrazole ligand interfere with nanojar formation, and whether appropriate substituents could be employed to tune the solubility of nanojars in solvents of interest, such as long-chain aliphatic hydrocarbons (solvent of choice for large-scale liquid–liquid extraction processes) and water. To this end, we conducted a comprehensive study using 40 different pyrazole ligands, with one, two or three substituents
Nanojars,一类新型的中性阴离子螯合剂,通式为[Cu II(OH)(pz)] n(Cu n ; n= 27–31,pz =吡唑根阴离子),可以有效地螯合各种具有较大水合能量的氧代阴离子。在这项工作中,我们探索了吡唑配体上的取代基是否会干扰纳米罐的形成,以及是否可以采用适当的取代基来调节纳米罐在目标溶剂(例如长链脂族烃)中的溶解度(大规模选择的溶剂)。液-液萃取过程)和水。为此,我们使用40种不同的吡唑配体进行了全面研究,这些配体在其3、4和5位上带有一个,两个或三个取代基。相应的纳米罐的特征在于单晶X射线衍射和/或电喷雾电离质谱(ESI-MS)。结果表明,Cu n可以得到在吡唑4-位具有各种取代基的nanojars,包括长链,苯基和CF 3基团。吡唑3-位还容许直链,并有利于Cu 30 -nanojar。然而,不能用苯基或CF 3基团获得同质的纳米罐。但是,如果与母体未取代的吡唑混合