Masuda, Kohji Abe, Takefumi Benten, Hiroaki Ohkita, Hideo Ito, Shinzaburo Fabrication and Conductive Properties of Multilayered Ultrathin Films Designed by Layer-by-Layer Assembly of Water-Soluble Fullerenes Fullerene ultrathin films were fabricated by layer-by-layer (LbL) assembly of an anionic fullerene C<sub>61</sub>(COO<sup>−</sup>)<sub>2</sub> (FDCA) and poly(diallyldimethylammonium chloride) (PDDA) or a cationic fullerene C<sub>60</sub>C<sub>2</sub>H<sub>4</sub>N(CH<sub>3</sub>)<sub>2</sub><sup>+</sup> (FMAC) and poly(sodium 4-styrenesulfonate) (PSS). The dynamic light scattering and ζ-potential measurements revealed that both water-soluble fullerenes are stably dispersed as polyelectrolytes with a diameter of 20−70 nm for FDCA and 60−180 nm for FMAC in aqueous solutions. In spite of such large fullerene aggregates, the thickness of fullerene LbL films increased regularly by a few nanometers with each deposition, and the resultant LbL films were homogeneous. For FMAC/PSS LbL films, the monolayer thickness was evaluated to be 4 nm for FMAC and 0.5 nm for the PSS layer. In other words, the volume fraction of the fullerene moiety is as high as ∼80 vol %. The conductivity of fullerene LbL films was comparable to that of a C<sub>60</sub>-dispersed polystyrene film with a similar fullerene fraction, suggesting that there exist effective percolating networks due to the high fullerene fraction in the LbL films. The electron mobility of FMAC/PSS LbL films was as high as 3 × 10<sup>−5</sup> cm<sup>2</sup> V<sup>−1</sup> s<sup>−1</sup>, which is comparable to the hole mobility of poly(<i>p</i>-phenylenevinylene) LbL films reported previously. PDDA;LbL films;PSS;FMAC;cationic fullerene C 60C;FDCA;Multilayered Ultrathin Films;nm;fullerene fraction;fullerene LbL films 2010-08-17
    https://acs.figshare.com/articles/journal_contribution/Fabrication_and_Conductive_Properties_of_Multilayered_Ultrathin_Films_Designed_by_Layer_by_Layer_Assembly_of_Water_Soluble_Fullerenes/2742277
10.1021/la101157a.s001