Cyclic nickel and free-base porphyrin dimers (Ni2-CPDPy and H4-CPDPy) include [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) both in solution and in the crystals. In the crystal packing of the inclusion complex of Ni2-CPDPy and PCBM, a nanotubular structure is constructed through the self-assembly of the porphyrin moiety. The PCBM molecules are linearly arranged in the inner channel of the nanotube to give a supramolecular peapod. On the other hand, in the crystal of the inclusion complex of H4-CPDPy and PCBM, a dimeric structure of the PCBM molecules is formed through π–π interaction between their phenyl groups.
环状
镍和游离基
卟啉二聚体(Ni2-CPDPy 和 H4-CPDPy)在溶液和晶体中都包含 [6,6]- 苯基-C61-
丁酸甲酯(PCBM)。在 Ni2-CPDPy 和 PCBM 的包合复合物的晶体结构中,
卟啉分子通过自组装形成了纳米管结构。PCBM 分子在纳米管的内部通道中呈线性排列,从而形成了一个超分子peapod。另一方面,在 H4-CPDPy 和 PCBM 的包合物晶体中,PCBM 分子的苯基之间通过 π-π 相互作用形成了二聚结构。