Synthesis And Charaterization Of Dendronized Polymers Based On Oligo(Ethylene Glycol) (OGE) And Two Second Generation Dendron Bearing Different Focal Points

The synthesis of functional dendron and dendronized polymer is a key research field for the dendritic molecules. In this paper, two different routes were designed to synthesize the dendron based on oligo(ethylene glycol)(OEG). Besides, the first-and second generation dendronized polymer were synthesized successfully. Finally, two kind of second generation dendron bearing different functional focal points based on synthesized second generation dendron were also synthesized. And there are three parts in detail.1. The second generation dendron based on oligo(ethylene glycol)(OEG) could be successfully synthesized through two different routes. In the first route, the yield of the key step of synthesis of the second generation dendron from the first generation dendron was 50%, and the purification was tedious and normally three times by chromatographic column. In the second route, the yield of the key step of synthesis of the second generation dendron from the first generation dendron was over 85%, and the purification was easy and only one time by chromatographic column. From the point of view of the yield and difficulty of purification, the second route was better than the first one.2. Based on the synthesized first-and second generation dendrons, the macromonomers bearing the MAC as polymerization unit were prepared. The first-and second generation dendronized polymers were synthesized through the traditional radical polymerization.3. Two other kinds of second generation dendrons based on OEG bearing aniline and 2-bromo-2-methylpropanate as focal point were also successfully synthesized through the chemical modification of focal point of the synthesized second generation dendron.