Tang Jian-Hong, Han Guanqun, Li Guodong, Yan Kaili, Sun Yujie
Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221, USA.
iScience. 2022 Mar 12;25(4):104064. doi: 10.1016/j.isci.2022.104064. eCollection 2022 Apr 15.
Photocatalysis under UV/visible light irradiation has emerged as one of the green methodologies for solar energy utilization and organic synthesis. These photocatalytic processes are typically initiated by one-photon-absorbing metal complexes or organic dyes. Nevertheless, the intrinsic restrictions of UV/visible light irradiation, such as shallow penetration in reaction solutions, competing absorption by substrates, and limited coverage of the solar spectrum, call for the development of innovative photocatalysts functioning under longer wavelength irradiation. Herein, we report a ruthenium complex containing a metal-organic framework, MOF-Ru1, which can drive diverse organic reactions under 740 nm light irradiation following the two-photon absorption (TPA) process. Various organic transformations such as energy transfer, reductive, oxidative, and redox neutral reactions were realized using this heterogeneous hybrid photocatalyst. Overall, MOF-Ru1 represents an intriguing TPA photocatalyst active under near-infrared light irradiation, paving a way for the efficient utilization of low-energy light and convenient photocatalyst recycling because of phase separation.
紫外/可见光照射下的光催化已成为太阳能利用和有机合成的绿色方法之一。这些光催化过程通常由单光子吸收金属配合物或有机染料引发。然而，紫外/可见光照射存在固有局限性，如在反应溶液中穿透浅、底物竞争性吸收以及太阳光谱覆盖有限等，这就需要开发能在更长波长照射下发挥作用的创新型光催化剂。在此，我们报道了一种含金属有机框架的钌配合物MOF-Ru1，它在双光子吸收（TPA）过程后可在740 nm光照射下驱动多种有机反应。使用这种多相混合光催化剂实现了各种有机转化，如能量转移、还原、氧化和氧化还原中性反应。总体而言，MOF-Ru1是一种在近红外光照射下具有活性的有趣的TPA光催化剂，由于相分离，为低能量光的高效利用和光催化剂的便捷回收铺平了道路。
