Extending aromatic acids on TiO_(2)for cooperative photocatalysis with triethylamine:Violet light-induced selective aerobic oxidation of sulfides  

作　　者：Hui Li Xia Li Jun Zhou Wenlong Sheng Xianjun Lang 

机构地区：[1]Sauvage Center for Molecular Sciences,College of Chemistry and Molecular Sciences,Wuhan University,Wuhan 430072,China

出　　处：《Chinese Chemical Letters》2022年第8期3733-3738,共6页中国化学快报（英文版）

基　　金：funded by the National Natural Science Foundation of China(Nos.22072108 and 21773173)。

摘　　要：Designing visible light photocatalysts with a metal oxide semiconductor as the starting material could expand a new horizon for the conversion and storage of solar energy.Here,the benchmark photocatalyst TiO_(2) was used to pursue this goal by anchoring aromatic acids.Extending the aromatic acid was strategically deployed to design TiO_(2) complexes with violet light-induced selective aerobic oxidation of sulfide as the probe reaction.With benzoic acid(BA)as the initial molecule,horizontally extending one or two benzene rings furnishes 2-naphthoic acid(2-NA)and 2-anthracene acid(2-AA).Moreover,triethylamine(TEA),an electron transfer mediator,was introduced to maintain the integrity of the anchored aromatic acids.Notably,there was a direct correlation between theπ-conjugation of aromatic acid ligand and the selective aerobic oxidation of sulfides.Among the three aromatic acids,2-AA delivered the best result over TiO_(2) due to the most extensiveπ-conjugated system.Ultimately,violet light-induced selective aerobic oxidation of sulfides into corresponding sulfoxides was conveniently realized by cooperative photocatalysis of 2-AA-TiO_(2) with 10 mol%of TEA.This work affords an extending strategy for designing the next-generation ligands for semiconductors to expand visible light-induced selective reactions.

关 键 词：Aromatic acid Extendingπ-conjugation Complex photocatalyst Oxidation of sulfides Cooperative photocatalysis 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]