Sensitizing photoactive metal-organic frameworks via chromophore for significantly boosting photosynthesis  

作　　者：Lihua Ma Song Guo Zhi-Ming Zhang Jin-Zhong Wang Tong-Bu Lu Xian-Shun Zeng 

机构地区：[1]School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China [2]Institute for New Energy Materials and Low Carbon Technologies,School of Material Science&Engineering,Tianjin University of Technology,Tianjin 300384,China

出　　处：《Chinese Chemical Letters》2024年第5期519-522,共4页中国化学快报（英文版）

基　　金：supported by National Key R&D Program of China(No.2019YFA0705201);National Natural Science Foundation of China(No.22171209)。

摘　　要：Photosensitization related to energy/electron transfer process is of great importance to natural photosynthesis.Herein,we proposed a promising strategy to improve the sensitizing ability of the typical photoactive MOFs(UiO-Ir)by engineering its metal coordination center with NBI(1,8-naphthalenebenzimidizole)chromophore.The resulting MOFs(UiO-Ir-NBI)exhibited a strong sensitizing ability for significantly boosting photosynthesis.Impressively,the catalytic yield of 2-chloroethyl ethyl sulfoxide with UiO-Ir-NBI can reach 99%,over 6 times higher than that with UiO-Ir(16.4%).Moreover,UiO-Ir-NBI exhibited an excellent catalytic stability and a broad substrate tolerance,highlighting its great application prospect.Systematic investigations revealed that the strong visible light absorption,long excited state lifetime and efficient electron-hole separation of UiO-Ir-NBI greatly contributed to harvesting visible light and facilitating interface electron/energy transfer for efficient solar energy utilization.This work provides a new horizon to boost photosythesis of MOFs by engineering their metal sensitizing centers at a molecular level.

关 键 词：Metal-organic framework PHOTOCATALYSIS Excited state Strong visible absorption Iridium complex 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]