Fabrication and Conductive Properties of Multilayered Ultrathin Films Designed by Layer-by-Layer Assembly of Water-Soluble Fullerenes

摘要: Fullerene ultrathin films were fabricated by layer-by-layer (LbL) assembly of an anionic fullerene C(61)(COO(-))(2) (FDCA) and poly(diallyldimethylammonium chloride) (PDDA) or a cationic C(60)C(2)H(4)N(CH(3))(2)(+) (FMAC) poly(sodium 4-styrenesulfonate) (PSS). The dynamic light scattering zeta-potential measurements revealed that both water-soluble fullerenes are stably dispersed as polyelectrolytes with diameter 20-70 nm for FDCA 60-180 FMAC in aqueous solutions. In spite such large aggregates, the thickness LbL increased regularly few nanometers each deposition, resultant homogeneous. For FMAC/PSS films, monolayer was evaluated to be 4 0.5 PSS layer. other words, volume fraction moiety is high approximately 80 vol %. conductivity comparable C(60)-dispersed polystyrene film similar fraction, suggesting there exist effective percolating networks due films. electron mobility 3 x 10(-5) cm(2) V(-1) s(-1), which hole poly(p-phenylenevinylene) reported previously.