Cyanines comprising a barbiturate group facilitate controlled radical polymerization with Fe(III)Br3 as the catalyst by exposure at two wavelengths in the Near-Infrared region. Proceeding at either 790 or 870 nm, it moves such systems towards a greener approach since these systems work with environmentally friendly light sources such as NIR-LEDs. The oxygen tolerance opens new features of synthesizing tailor-made polymers following a protocol based on controlled radical polymerization. Veronika Strehmel and colleagues discuss this more in their article on page 2023. (DOI: 10.1002/pol.20210273)

中文翻译：

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封面图片，第 59 卷，第 18 期

包含巴比妥酸酯基团的花青通过在近红外区域的两个波长下曝光，促进以 Fe(III)Br3 作为催化剂的受控自由基聚合。在 790 或 870 nm 处进行，它将此类系统推向更环保的方法，因为这些系统与 NIR-LED 等环保光源一起工作。根据基于受控自由基聚合的协议，氧耐受性开启了合成定制聚合物的新功能。Veronika Strehmel 及其同事在第 2023 页的文章中对此进行了更多讨论。 (DOI: 10.1002/pol.20210273)