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    Electrochemical control of surface wettability of poly(3-alkylthiophenes)

    Year: 2006

    Journal: Surface Science, Volume 600, Issue 11, 1 June 2006, Pages L148-L152, 20111221

    Authors: Linda Robinson, Joakim Isaksson, Nathaniel D. Robinson and Magnus Berggren

    Organizations: Organic Electronics, Department of Science and Technology (ITN), Linköping University, Campus Norrkoping, SE-601 74 Norrköping, Sweden

    The effect of n-alkyl side-chain length on water contact angle with films in neutral and electrochemically doped states are studied. Increasing the side-chain from butyl to hexyl to octyl increases the contact angle of water on conjugated polymer films in both electrochemical states, but decreases the difference in angle between the states in the same film. Devices based on these films have potential application in, for example, guiding water and other liquids through microfluidic channels in lab-on-a-chip and micro-electro-mechanical (MEM) applications.