Self-Assembly of Hexakis(4-pyridylmethoxy)cyclotriphosphazene and 1,4-Anthracenedicarboxylic Acid: Structure and Inclusion Behavior
作者:Tomoyuki Itaya、Nagao Azuma、Kenzo Inoue
DOI:10.1246/bcsj.75.2275
日期:2002.10
2,2,4,4,6,6-Hexakis(4-pyridylmethoxy)-2λ5,4λ5,6λ5,-cyclotriphosphazene (PyPN) and 1,4-anthracenedicarboxylic acid (DCA) formed polymeric supramolecules through hydrogen bonding between carboxyl and pyridyl groups. Two supramolecular self-assemblies were obtained: crystals 1 composed of PyPN/DCA = 1 : 2 from DMSO solution, and crystals 2 composed of PyPN/DCA = 1 : 3 from DMF solution. The former is monoclinic, space group P21/n with a = 12.419 Å, b = 24.10 Å, c = 20.794 Å, β = 93.53°, V = 6212 Å3, Z = 4. The X-ray analysis showed that the complementary hydrogen bonding occurs with two DCA molecules, one on each side of the phosphazene ring of PyPN, to give a novel assembly with polymeric structure. The self-assembly obtained from DMF solution seems to take a cylindrical structure composed of an alternating sequence of one PyPN and three DCA molecules and to be packed into a hexagonal arrangement, as suggested by X-ray diffraction data. These results and the inclusion behaviors of the solvent molecules into 1 and 2 are described.
2,2,4,4,6,6-六(4-吡啶基甲氧基)-2λ5,4λ5,6λ5,-环三磷腈(PyPN)和1,4-蒽二羧酸(DCA)通过羧基和吡啶基之间的氢键形成聚合超分子。 两种超分子自组装物分别由DMSO溶液中的PyPN/DCA = 1 : 2和DMF溶液中的PyPN/DCA = 1 : 3组成。 前者是单斜晶系,空间群P21/n,a = 12.419 Å,b = 24.10 Å,c = 20.794 Å,β = 93.53°,V = 6212 Å3,Z = 4。 X射线分析表明,互补氢键与两个DCA分子发生,一个在PyPN的磷腈环的每一侧,以形成具有聚合物结构的新型组装物。 从DMF溶液中获得的自组装物似乎采用圆柱形结构,由一个PyPN和三个DCA分子交替排列组成,并按照X射线衍射数据建议的六边形排列。 这些结果和溶剂分子在1和2中的包合行为进行了描述。