手性金属-有机骨架材料(metal—organicframeworks,MOFs)作为一种新型的功能材料,因其具有高比表面积、丰富的拓扑结构、持久性的孔结构以及可修饰的孔道表面等特点,在对映选择性催化和手性分离方面有着广阔的应用前景。本文将一种单手螺旋三维金属一有机骨架材料[{CU(sala)}n](H2sala=N-(2-hydroxybenzyl)-L—ala—nine)与全戊基-β-环糊精混合,制备了新型毛细管气相色谱固定相。为了考察手性MOF是否能够增强全戊基-β-环糊精的手性分离能力,分别用不同的固定相制备了3根手性柱用于对比:柱A([{Cu(sala)}n])、柱B(全戊基-β-环糊精)和柱c([{Cu(sala)}n]+全戊基]-β-环糊精)。比较了柱A、柱B和柱c对相同手性化合物的拆分能力,结果表明柱c具有更好的手性选择性和更高的分辨能力,证实使用MOF[{Cu(sala)}n]能够提高全戊基-β-环糊精的对映选择分离能力。
Metal-organic frameworks (MOFs) as a new generation of functional molecular materials, have broad application prospects in enantioselective catalysis and chiral separation areas due to their unusual properties, such as high surface area, rich topologies, permanent microporous, availability of outer-surface modification and so on. A single-handed helical three- dimensional metal-organic framework material [ { Cu (sala) } n] ( H2 sala = N-(2-hydroxybenzyl) - L-alanine) was incorporated with peramylated fi-cyclodextrin for the preparation of novel capil- lary gas chromatography stationary phase. To investigate whether the use of a chiral MOF can enhance enantioseparation on peramylated fi-cyclodextrin, three chiral columns were fabricated using different stationary phases for comparison, including column A ( [ {I Cu (sala) } n] ) , col- umn B ( peramylated β-cyclodextrin) and column C ( I { Cu(sala) } n] +peramylated fi-cyclodex- trin). The results of comparing the resolving abilities of the three columns for the same chiral compounds demonstrated that column C showed better enantioselectivity and higher resolution. The use of MOF [ { Cu(sala) }, ] can improve enantioseparation on peramylated fl-cyclodextrin.