The Synthesis of Organic Molecules of Intrinsic Microporosity Designed to Frustrate Efficient Molecular Packing
作者:Rupert G. D. Taylor、C. Grazia Bezzu、Mariolino Carta、Kadhum J. Msayib、Jonathan Walker、Rhys Short、Benson M. Kariuki、Neil B. McKeown
DOI:10.1002/chem.201504212
日期:2016.2.12
ylbenzene>spirobifluorene>naphthyl=phenyl. The introduction of bulky hydrocarbon substituents significantly enhances microporosity by further reducing packing efficiency. These results are consistent with findings from previously reported packing simulation studies. The introduction of methyl groups at the bridgehead position of triptycene units reduces intrinsic microporosity. This is presumably due
氟官能化联苯和三联苯衍生物与儿茶酚官能化端基之间的高效反应为获得具有固有微孔性的大而离散的有机分子(OMIM)提供了一条途径,这些分子仅通过其低效的堆积来提供多孔固体。通过改变端基的尺寸和取代基体积,产生了许多表观BET表面积超过600m 2 g -1的可溶性化合物。OMIM结构单元产生微孔的效率依次为:丙烷>三蝶烯>六苯基苯>螺二芴>萘基=苯基。大体积烃取代基的引入通过进一步降低填充效率来显着提高微孔率。这些结果与之前报道的包装模拟研究的结果一致。在三蝶烯单元的桥头位置引入甲基降低了固有的微孔率。这可能是由于它们在 OMIM 结构中的内部位置,因此它们占据空间,但与外围取代基不同,它们不会因低效堆积而有助于产生自由体积。