Chakraborty Debsena, Saha Rupak, Clegg Jack K, Mukherjee Partha Sarathi
Department of Inorganic and Physical Chemistry, Indian Institute of Science Bangalore 560012 India
School of Chemistry and Molecular Biosciences, The University of Queensland St. Lucia Queensland 4072 Australia.
Chem Sci. 2022 Sep 14;13(40):11764-11771. doi: 10.1039/d2sc04660a. eCollection 2022 Oct 19.
Polycyclic aromatic hydrocarbons (PAHs) find multiple applications ranging from fabric dyes to optoelectronic materials. Hydrogenation of PAHs is often employed for their purification or derivatization. However, separation of PAHs from their hydrogenated analogues is challenging because of their similar physical properties. An example of such is the separation of 9,10-dihydroanthracene from phenanthrene/anthracene which requires fractional distillation at high temperature (∼340 °C) to obtain pure anthracene/phenanthrene in coal industry. Herein we demonstrate a new approach for this separation at room temperature using a water-soluble interlocked cage (1) as extracting agent by host-guest chemistry. The cage was obtained by self-assembly of a triimidazole donor L·HNO with -[(tmeda)Pd(NO)] (M) [tmeda = ,,','-tetramethylethane-1,2-diamine]. 1 has a triply interlocked structure with an inner cavity capable of selectively binding planar aromatic guests.
多环芳烃（PAHs）有多种应用，从织物染料到光电子材料。PAHs的氢化常用于其纯化或衍生化。然而，由于PAHs与其氢化类似物的物理性质相似，将它们分离具有挑战性。例如，在煤炭工业中，要从菲/蒽中分离出9,10 - 二氢蒽，需要在高温（约340°C）下进行分馏才能获得纯蒽/菲。在此，我们展示了一种在室温下使用水溶性互锁笼状化合物（1）作为萃取剂，通过主客体化学进行这种分离的新方法。该笼状化合物是由三咪唑供体L·HNO与 -[(tmeda)Pd(NO)]（M）[tmeda = ,,','-四甲基乙烷 - 1,2 - 二胺]自组装得到的。1具有三重互锁结构，其内腔能够选择性地结合平面芳香族客体。
