“…Dendrimers have been highlighted as monodisperse polymeric materials with nanometer‐scale dimension, 1–2 which is attractive for their use in analytical applications as well as other applications, such as drug delivery, nanomaterial synthesis, surface coating, and disease diagnosis and therapy 3–11 . Recently, we have reported the electrochemical surface modification of electrode materials including glassy carbon, carbon nanotube, and indium tin oxide (ITO) via electro‐oxidative coupling of amine‐terminated dendrimers 12–14 .…”