Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 14, Pages 11758-11765Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am5025148
Keywords
conjugated polyelectrolytes (CPE); Bunte salts; self-assembly; cross-linking; charge injection interlayer; conjugated polymer bilayer
Funding
- Deutsche Forschungsgemeinschaft DFG [RI 1551/4-1]
- European Community [212311]
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Anionic, conjugated thiophene- and fluorene-based polyelectrolytes with alkylthiosulfate side chains undergo hydrolysis under formation of alkylthiol and dialkyldisulfide functions. The hydrolysis products can be deposited onto gold or silver surfaces by self-assembly from solutions of the anionic conjugated polyelectrolyte (CPE) precursors in polar solvents such as methanol. This procedure allows solution-based surface modifications of gold and silver electrodes using environmentally friendly solvents and enables the formation of conjugated polymer bilayers. The herein presented alkylthiosulfate-substituted CPEs are promising candidates for increasing the work function of gold and silver electrodes thus improving hole injection from such electrode assemblies into organic semiconductors.
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