Dendrimer building blocks are single-branched polymers composed of three layers: a core, regular branches of the dendritic core, and an outer surface layer. They are usually spherical in shape within a precise nanometer scale and exhibit physical properties that are different from those of traditional linear polymers. Due to their unique structure, dendrimer building blocks have attracted extensive attention in various fields such as chemical sensors, catalysts, electronics, photonics, and medicine.