树枝状化合物是一类三维的、高度有序的新型高分子．与传统高分子相比，这类化合物在合成时，可以在分子水平上严格控制，设计分子大小、形状、结构和功能基团，产物一般高度对称，单分散性好．因而具有广泛的潜在用途［１，２］．近年来，已引起广大化学工作者的重视．但... Dendrimers are a new class of three-dimensional, highly ordered polymers. Compared with the traditional macromolecules, these compounds can be strictly controlled at the molecular level during the synthesis, and the molecular size, shape, structure and functional groups are designed. The products are generally highly symmetrical and have good monodispersity. It has a wide range of potential uses [1,2]. In recent years, the majority of chemical workers have attracted the attention. but...