Coupling electropolymerization and microfluidic for the generation of surface anisotropy

The combination of microfluidic and electrochemistry for the generation of surface anisotropy of functionalized pyrrole is described. By using co-electropolymerization of pyrrole and pyrrole-biotin in a microfluidic environment, we have created a surface density gradient of pyrrole-biotin on gold electrodes as revealed by fluorescence. The combination of fast electropolymerization and microfluidic allows the transfer of a local volume anisotropy to a surface anisotropy with a tuneable slope of the gradient.