Nanostructure impact on electrocatalysis in gold nanodimers via electrochemiluminescence microscopy.

This study explores the mechanism of enhanced electrochemiluminescence (ECL) due to the coupling effect in gold nanodimers (Au NDs) with precisely controlled interparticle distances via electrochemiluminescence microscopy (ECLM). Our research revealed that the enhancement in ECL was predominantly attributed to increased charge density and elevated electric fields resulting from overlapping electrochemical double layers. These findings offer new insights into the fundamental processes that govern nanostructure-mediated electrocatalysis, opening up exciting possibilities for future applications.