Max Planck institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany.
Angew Chem Int Ed Engl. 2018 Mar 5;57(11):2967-2971. doi: 10.1002/anie.201711773. Epub 2018 Feb 14.
Water compatibility for heterogeneous photocatalysts has been pursued for energy and environmental applications. However, there exists a trade-off between hydrophilicity and recyclability of the photocatalyst. Herein, we report a conjugated polymer photocatalyst with tertiary amine terminals that reversibly binds CO in water, thereby generating switchable hydrophilicity. The CO -assisted hydrophilicity boosted the photocatalytic efficiency in aqueous medium with minimum dosage. When CO was desorbed, the photocatalyst could be simply regenerated from reaction media, facilitating the repeated use of photocatalyst. Hydrophilicity/hydrophobicity control of the polymer photocatalyst was successfully showcased through a variety of organic photoredox reactions under visible-light irradiation in water.
为了能源和环境应用，人们一直在追求异质光催化剂的水分兼容性。然而，光催化剂的亲水性和可回收性之间存在着权衡。在此，我们报告了一种具有叔胺末端的共轭聚合物光催化剂，它可以在水中可逆地结合 CO，从而产生可切换的亲水性。CO 辅助的亲水性以最小的用量提高了水相中的光催化效率。当 CO 解吸时，光催化剂可以从反应介质中简单地再生，从而促进光催化剂的重复使用。通过可见光照射下水中的各种有机光氧化还原反应，成功地展示了聚合物光催化剂的亲水性/疏水性控制。
