Single Nanostructured Gold Amalgam Microelectrode Electrochemiluminescence: From Arrays to a Single Point

摘要： Here we show a technique to prepare an array of Au nanostructured electrodes by selective co-deposition of AuxHgy with subsequent electrochemical dealloying of Hg resulting in branched microstructures with Hg free surface ≈824×greater with respect to the original area defined by lithography. We studied the kinetics of the electrochemoluminescence reaction using the Ru(bpy)3 2+ based system. The microstructured nontoxic AuxHgy can also find numerous applications in electrochemistry, especially for DNA and proteins.