Molecular bilayer-based superstructures of a fullerene-carrying ammonium amphiphile: Structure and electrochemistry

Naotoshi Nakashima

    Research output: Contribution to journalArticlepeer-review

    93 Citations (Scopus)

    Abstract

    The synthesis of a water-soluble C60-carrying single-chain ammonium amphiphile, 10-(N-methyl-2-fulleropyrrolidyl) decyltrimethylammonium bromide (1) as well as the characterization of aqueous solutions and cast films of 1 are described. X-ray diffraction study suggests that cast films of 1 form a multilayer structure based on biomembrane-like molecular bilayers. Electron microscopy has revealed that 1 produces both fibrous and disk-like aggregates with 10-12 nm of thickness through self-organization of 1 in aqueous solution. Differential scanning calorimetry, dynamic light scattering, FTIR, and UV-visible absorption studies were also carried out to characterize aqueous solutions and cast films of 1. Electrochemistry for an aqueous solution and for cast films of just 1 and 1 incorporated in lipid films on electrodes was conducted. It was found that films of just 1 and of 1/lipid cast on electrodes showed electron transfer reactions leading to the generation of the fullerene dianion or trianion. In contrast, electrochemistry of aqueous solution of 1 at a bare electrode gives a cathodic current near -0.5 to -0.6 V against SCE; however, an anodic current for the solution did not appear.

    Original languageEnglish
    Pages (from-to)1766-1772
    Number of pages7
    JournalChemistry - A European Journal
    Volume7
    Issue number8
    DOIs
    Publication statusPublished - Apr 17 2001

    All Science Journal Classification (ASJC) codes

    • Catalysis
    • Chemistry(all)
    • Organic Chemistry

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