Synthesis of fluorescent polyolefins has attracted chemists’ considerable attention. While the main methods are based on copolymerization using polar olefins containing fluorophores, the direct synthesis of covalently fluorescent polymers from readily available nonpolar polyolefins is very rare. Herein, we report an efficient protocol for the synthesis of fluorescent polyethylene materials via photoinduced iron catalysis through C–H bond functionalization of polyethylene. Aggregation-induced emission fluorophores, including tetraphenylethylene and benzo[c][1,2,5]thiadiazol-4-yl-triarylamine moieties, could be incorporated to yield fluorescent materials with diverse luminescence between 490 and 650 nm. While these polymers emit in both solid and solution states, a stretchable white light film could be prepared by the blending of three fluorescent polymers. Moreover, this strategy could be used for the functionalization of a series of commonly found plastic products. Experiments further revealed potential applications of these fluorescent polymers as fluorescent compatibilizers and polymeric detectors of nitroaromatic compounds.

中文翻译：

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荧光团共价安装到聚乙烯中：合成、表征和应用

荧光聚烯烃的合成引起了化学家的广泛关注。虽然主要方法是基于使用含有荧光团的极性烯烃进行共聚，但由容易获得的非极性聚烯烃直接合成共价荧光聚合物的情况非常罕见。在此，我们报告了一种通过聚乙烯 C-H 键功能化通过光诱导铁催化合成荧光聚乙烯材料的有效方案。可以掺入聚集诱导的发射荧光团，包括四苯乙烯和苯并[ c ][1,2,5]噻二唑-4-基-三芳基胺部分，以产生在 490 至 650 nm 之间具有多种发光的荧光材料。虽然这些聚合物以固态和溶液状态发光，但可以通过混合三种荧光聚合物来制备可拉伸的白光薄膜。此外，该策略可用于一系列常见塑料产品的功能化。实验进一步揭示了这些荧光聚合物作为硝基芳香族化合物的荧光增容剂和聚合物检测器的潜在应用。