An iterative method for molecular assembly has been developed based on the cation-pool method using (trimethylsilyl) diphenylmethane as a building block. The silyl group works as both an activating group of the benzene ring in the Friedel− Crafts type reaction and an electroauxiliary in the subsequent low temperature anodic oxidation to generate dendritic diarylcarbenium ions, which were well characterized by low-temperature NMR ...