Porphyrin nanotubes based on self-assembly of Mo(V)-dodecaphenylporphyrin complexes and inclusion of Mo-oxo clusters: Synthesis and characterization by X-ray crystallography and transmission electron microscopy

Takahiko Kojima, Ryosuke Harada, Tatsuaki Nakanishi, Kenji Kaneko, Shunichi Fukuzumi

    研究成果: ジャーナルへの寄稿学術誌査読

    60 被引用数 (Scopus)

    抄録

    A saddle-distorted molybdenum(V)-dodecaphenylporphyrin (H2DPP) complex, [Mo(DPP)(O)(OMe)] (1), was converted to [Mo(DPP)(O)(H 2O)]+ (2) in the course of recrystallization from toluene with vapor diffusion of methanol. The complex 2 was organized via self-assembly to form a porphyrin nanotube having a diameter of 1 nm, concomitant with size-selective inclusion of three kinds of novel tetranuclear Mo(VI)-oxo clusters in the nanotube. This porphyrin nanotube exhibits amphiphilic characteristics, that is, a hydrophobic porphyrin surface and a hydrophilic inner-sphere made of aquo ligands to include ionic and hydrophilic entities. Each nanotube has no direct interaction; however, the toluene molecules of crystallization linked the nanotubes together with intermolecular π-π and CH/π interactions. Transmission electron microscopy measurements and energy-dispersive X-ray analysis revealed that the diameters of porphyrin nanotubes could be altered by the size of the Mo-oxo clusters included and also a porphyrin nanoring could be obtained. These results indicate that a variety of porphyrin nanotubular structures can be fabricated by using DPP complexes via cooperatively template-assisted self-assembly.

    本文言語英語
    ページ(範囲)51-58
    ページ数8
    ジャーナルChemistry of Materials
    19
    1
    DOI
    出版ステータス出版済み - 1月 9 2007

    !!!All Science Journal Classification (ASJC) codes

    • 化学 (全般)
    • 化学工学(全般)
    • 材料化学

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