Large scale synthesis of dendrimers to apply to multifunctional nano materials

建立了单分散树枝状大分子的大规模合成方法，得到了100克规模的多元醇和聚丙烯酸酯树枝状大分子，通过在树枝状大分子表面一步化学修饰，可以方便地制备具有末端光聚合和/或光交联基的光功能树枝状大分子。这些类型的树枝状大分子表现出非常独特的光化学行为和超高的光反应活性。我们还研究了另一种基于物理吸附的端基修饰。研究发现，通过与所需的光响应羧酸衍生物混合，聚吡啶树枝状大分子可以自组织成氢键球状组合，表现出特定的光功能，这取决于树枝状大分子的代次。

Large scale synthesis of monodispersed dendrimers were established to give polyol and polyacrylate dendrimers in 100 gram scales.Photofunctuinal dendrimers with terminal photopolymerization and/or photocrosslinking units were conveniently prepared by chemical midification at the dendrimer surfaces in one steps. These types of dendrimers exhibited quite characteristic photochemical behaviors and extraordinary high photoreactivity.We also examined the other type of teriminal modification based on physical adsorption. It was found that the polypyridyl dendrimers were self-organized into the hydrogen-bonded globular assemblages by mixing with the desired photoresponse carboxylic acids derivatives to exhibit specific photofunctionalities depending on the dendrimer generations.