Two helical conjugated ladder polymers (CLPs) have been synthesized using the photochemical cyclo-dehydrochlorination (CDHC) reaction on polychlorinated polymer derivatives. UV–vis and photoluminescence spectroscopy revealed that the outer chlorinated rings (phenyl or thiophene) used for the ladderization step have a significant impact on the conformation and electronic properties of the resulting polymers. The thiophene-embedded CLP exhibits strong intermolecular interactions and excimer-like emission due to a loose coil conformation while the all-phenyl CLP exhibits a tightly packed coil conformation. The helical CLPs also show good affinity toward HiPco carbon nanotubes (CNTs) as stable dispersions were prepared.

中文翻译：

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螺旋共轭梯形聚合物：通过边缘设计调整构象和性能

使用光化学环脱氯化氢（CDHC）反应在多氯代聚合物衍生物上合成了两种螺旋共轭梯形聚合物（CLP）。紫外可见光谱和光致发光光谱表明，用于阶梯化步骤的外部氯化环（苯基或噻吩）对所得聚合物的构象和电子性能有重大影响。嵌入噻吩的CLP由于线圈构象松散而表现出强烈的分子间相互作用和受激准分子样发射，而全苯基CLP则表现出紧密堆积的线圈构象。制备稳定的分散体后，螺旋CLP对HiPco碳纳米管（CNT）也显示出良好的亲和力。