Add time:08/05/2019         Source:sciencedirect.com

Oxidative doping of thin π-conjugated polymer films using acetonitrile solutions of gold trichloride yields electronically conductive polymers (15 Ω−1 cm−1) containing the AuCl4− counter ion. Thin oxidized films containing counter ions are orders of magnitude more stable in ambient atmosphere at 25 °C than polymers oxidized using AuCl4− conventional oxidants such as iron trichloride. Oxidation of polymer films using solutions of AuCl3 in nitromethane results in electroless deposition of zero-valent gold in addition to formation of AuCl4−-doped polymer. Thick films (> 1 μm) afford growth of a homogeneous and continuous metallic layer on top of the polymer film. As a result, conductivities of the metal/polymer bilayers are as high as 11 000 Ω−1 cm−1. Mechanisms of oxidative doping and deposition of gold metal are described.

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