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Molecular Bilayer‐Based Superstructures of a Fullerene‐Carrying Ammonium Amphiphile: Structure and Electrochemistry
Author(s) -
Nakashima Naotoshi,
Ishii Tatsuyoshi,
Shirakusa Masaharu,
Nakanishi Takashi,
Murakami Hiroto,
Sagara Takamasa
Publication year - 2001
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/1521-3765(20010417)7:8<1766::aid-chem17660>3.0.co;2-f
Subject(s) - aqueous solution , electrochemistry , ammonium bromide , differential scanning calorimetry , fullerene , amphiphile , materials science , bilayer , chemical engineering , chemistry , electrode , organic chemistry , membrane , polymer , pulmonary surfactant , copolymer , biochemistry , physics , engineering , thermodynamics
Abstract The synthesis of a water‐soluble C 60 ‐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.