作者:Christian A. Christensen、Martin R. Bryce、Jan Becher
DOI:10.1055/s-2000-8203
日期:——
The convergent synthesis of multi(TTF) dendrimers with glycol chains as the branches is reported. Key methodology in the iterative steps involves nucleophilic displacement of reactive halides by transient TTF-thiolate anions. Core units in the dendrimers are 1,3,5-trisubstituted benzene, TTF and hexa-substituted benzene, providing three-, four- and six-directional cores, respectively. Cyclic voltammetry (CV) and thin layer CV studies establish that the TTF redox chemistry is retained in the dendrimer structures, with clean sequential formation of multi(cation radical) and multi(dication) species upon electrochemical oxidation.
报告了以乙二醇链为分支的多(TTF)树枝状大分子的聚合合成方法。迭代步骤中的关键方法涉及利用瞬态TTF-硫醇盐阴离子对活性卤化物进行亲核取代。树枝状大分子的核心单元分别为1,3,5-三取代苯、TTF和六取代苯,提供了三向、四向和六向的核心结构。循环伏安法(CV)和薄层CV研究表明,树枝状大分子结构中保留了TTF的氧化还原化学,通过电化学氧化可以清晰地依次形成多(阳离子自由基)和多(二阳离子)物种。