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首页> 外文期刊>Catalysis science & technology >Tetrathienoanthracene-functionalized conjugated microporous polymers as an efficient, metal-free visible-light solid organocatalyst for heterogeneous photocatalysis
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Tetrathienoanthracene-functionalized conjugated microporous polymers as an efficient, metal-free visible-light solid organocatalyst for heterogeneous photocatalysis

机译：Tetrathienoanthracene-functionalized共轭微孔聚合物作为一种高效,不含金属的可见光坚实organocatalyst多相光催化

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摘要

Owing to their advantages of superior inherent porosity, high chemical stability, light weight, and molecularly tunable optoelectronic properties, conjugated microporous polymers (CMPs) have been receiving increasing attention and research interest as promising alternatives to traditional inorganic semiconductors for heterogeneous photocatalysis. Herein, we report the concise synthesis of tetrathienoanthracene-based conjugated microporous polymers (TTA-CMP) via a bottom-up strategy. TTA-CMP was employed as metal-free visible-light solid organocatalyst for three prototypic organic reactions: the dehydrogenative coupling reaction, dehydrogenative-Mannich reaction, and photocatalytic synthesis of benzimidazoles. Indeed, TTA-CMP showed excellent photocatalytic activity (29 examples, 80-98% yield) and outstanding reusability (10-12 times) in these three reactions. The extended pi-conjugation in TTA-CMP enhances its visible light absorption, therefore, TTA-CMP displays higher catalytic activity than the corresponding small molecular photocatalyst. This work reveals the bright future of TTA-CMP as an efficient solid organocatalyst for other photocatalytic syntheses.
机译：由于优越的固有的优势孔隙度、化学稳定性高、重量轻、和分子可调光电子属性,共轭微孔聚合物(CMPs)已经收到越来越多的关注作为有前途的选择和研究兴趣传统的无机半导体多相光催化。简洁的合成的tetrathienoanthracene-based共轭通过自下而上的微孔聚合物(TTA-CMP)策略。可见光固体organocatalyst三被有机反应:dehydrogenative偶联反应,dehydrogenative-Mannich反应,光催化的合成苯并咪唑。光催化活性(29例子,80 - 98%收益率)和出色的可重用性(10 - 12次)在这三个反应。pi-conjugation TTA-CMP提高其可见因此,光吸收TTA-CMP显示器比相应的更高的催化活性小分子的光催化剂。TTA-CMP作为高效的光明的未来固体organocatalyst其他光催化合成。

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