Reversible Conversion of Conducting Polymer Films from Superhydrophobic to Superhydrophilic†
Lianbin Xu Dr.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorWilfred Chen Prof.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorAshok Mulchandani Prof.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorYushan Yan Prof.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorLianbin Xu Dr.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorWilfred Chen Prof.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorAshok Mulchandani Prof.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorYushan Yan Prof.
Department of Chemical and Environmental Engineering, University of California, Riverside, CA 92521, USA, Fax: (+1) 951-827-5696
Search for more papers by this authorThis work was supported by a US NSF grant (CCF0330451) and a US DoD/DARPA/DMEA grant. We thank A. Yu for help on the conductivity measurement of the samples.
Graphical Abstract
On-again, off-again personality: Superhydrophobic conducting polypyrrole (PPy) films are synthesized through a facile electrochemical process. The PPy films exhibit an extended porous structure with both coarse- and fine-scale roughness (see image). By controlling the electrical potential, PPy films can be switched between the oxidized state and the neutral state, resulting in reversibly switchable superhydrophobic and superhydrophilic properties.
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