Self-assembled materials can be designed to express useful optoelectronic properties; however, achieving structural control is a necessary precondition for the optimization of desired properties. Here we report a simple, metal-templated polymerization process that generates helical metallopolymer strands over 75 repeat units long (28 kDa) from a single bifunctional monomer and Cu^I. The resulting polymer consists of a double helix of two identical conjugated organic strands enclosing a central column of metal ions. The length of this metallopolymer can be controlled by adding monofunctional subcomponents to end-cap the conjugated ligands. The use of ditopic and bulky monotopic subcomponents, respectively, allows a head-to-head or head-to-tail double helix to be generated. Spectroscopic measurements of different polymer lengths demonstrate how control over polymer length leads to control over the electronic and luminescent properties of the resulting material, thereby enabling tunable white-light emission.

中文翻译：

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具有可调长度和可控区域化学的共轭金属聚合物的自组装

可以设计自组装材料来表达有用的光电特性；但是，实现结构控制是优化所需性能的必要前提。在这里，我们报告了一种简单的，以金属为模板的聚合过程，该过程从单个双官能单体和Cu ^I生成了超过75个重复单元长（28 kDa）的螺旋金属聚合物链。所得的聚合物由包围金属离子中心柱的两个相同的共轭有机链的双螺旋组成。该金属聚合物的长度可以通过添加单官能亚组分以将共轭配体封端来控制。分别使用对位和庞大的单位子组件，可以生成头对头或头对尾双螺旋。不同聚合物长度的光谱测量结果表明，对聚合物长度的控制如何导致对所得材料的电子和发光特性的控制，从而实现可调的白光发射。