Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), Key Laboratory for Macromolecular Science of Shaanxi Province, School of Chemistry and Chemical Engineering , Shaanxi Normal University , Xi'an 710119 , P. R. China.
Org Lett. 2018 Apr 20;20(8):2138-2142. doi: 10.1021/acs.orglett.8b00306. Epub 2018 Apr 9.
A "Janus" type of hexa- cata-hexabenzocoronene with three triptyceno subunits fused symmetrically on the periphery of coronene has been synthesized using a covalent self-assembly strategy. The triptyceno subunits form a nanosized nest on one side of the aromatic plane with space-matching fullerenes such as C and C to afford shape-complementary supramolecular complexes. The formation of the complexes in solution was confirmed by H NMR and fluorescence titration. Four complexes with C or C were obtained and studied by single-crystal X-ray diffraction analysis. In the crystal structure, the host shows a proper tunability to adjust its conformation in accordance with the shape of the guest. The different stoichiometric ratios and various stacking patterns of the complexes suggest the diversity of this nonplanar polyaromatic host in complexation with fullerenes.
一种具有三个三并苯单元的“两面神”型六并苯，通过共价自组装策略在并苯的外围对称地融合。三并苯单元在芳香平面的一侧形成纳米级的巢，与 C 和 C 等富勒烯形成空间匹配的超分子配合物。通过 1H NMR 和荧光滴定证实了配合物在溶液中的形成。得到了四个与 C 或 C 形成的配合物，并通过单晶 X 射线衍射分析进行了研究。在晶体结构中，主体表现出适当的可调节性，以根据客体的形状调整其构象。配合物的不同化学计量比和各种堆积模式表明，这种非平面多芳烃主体与富勒烯的络合具有多样性。
