Synthesis, Optical, and Electrochemical Properties of a New Family of Dendritic Oligothiophenes
作者:Yong Zhang、Chunchang Zhao、Jinhua Yang、Mbiya Kapiamba、Olesya Haze、Lewis J. Rothberg、Man-Kit Ng
DOI:10.1021/jo0619581
日期:2006.12.1
properties of this series of oligothiophenes-based dendrimers are shown to be strongly influenced by their morphologies as demonstrated by their pronounced solvatochromic and thermochromic responses under different environmental conditions. Introducing rigid oligothiophene arms to shape non-persistent ester-linked dendrimers causes higher generation dendrimers (G2 and G3) to exhibit solvatochromism and thermochromism
合成并研究了新型的具有低聚噻吩(OT)臂的第三类半柔性树状聚合物。所使用的合成方法包括用于低聚噻吩的钯催化的Stille交叉偶联反应,用于结构单元的Sonogashira交叉偶联反应以及用于构建各种树枝状化合物的碳二亚胺介导的酯化的组合。这一系列基于低聚噻吩的树枝状大分子的光学和电化学性质显示出受其形态的强烈影响,如在不同环境条件下明显的溶剂化和热致变色反应所证明。引入刚性的寡聚噻吩臂以形成非持久性酯连接的树枝状大分子,会导致生成更高年龄的树枝状大分子(G2和G3)表现出溶剂致变色和热致变色,而它们的寡聚对应物(3b)和低代(G1)类似物则没有。观察到由于分子内和分子间聚集而引起的光谱变化。