Effect of the Core Structure on the Sequential Coordination of Phenylazomethine Dendrimer

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• 作者：Ken Albrecht ; Noriko Sakane ; Yusuke Inomata…
• 关键词：Phenylazomethine ; Dendrimer ; Dendritic ligand ; Potential gradient ; Sequential coordination
• 刊名：Journal of Inorganic and Organometallic Polymers and Materials
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：25
• 期：1
• 页码：133-139
• 全文大小：1,891 KB
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• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Inorganic Chemistry
  Organic Chemistry
  Polymer Sciences
  
• 出版者：Springer New York
• ISSN：1574-1451

文摘

Phenylazomethine dendrimer (DPA) is a dendritic ligand that coordinates to various Lewis acids in a stepwise radial fashion. Second generation para-substituted and meta-substituted phenylazomethine dendrimers with p-phenylenediamine and m-phenylenediamine core were synthesized and the coordination sequence was investigated by UV–vis titration. Stepwise radial complexation from the outer layer was observed for the m-phenylenediamine core meta-substituted phenylazomethine dendrimer (m-mG2). Other three dendrimers showed stepwise radial complexation from the inner layer. The reason could be explained with the binding constant of the 1st generation dendrimer (model of the 1st layer). This is suggesting that for controlling the coordination sequence of DPA, not only the dendron structure is important, but also the structure of the core is an important factor.