光催化
氮化碳
材料科学
氮化物
原位
碳纤维
化学工程
催化作用
纳米技术
光化学
化学
有机化学
复合材料
复合数
工程类
图层(电子)
作者
Bastian Dauth,Paolo Giusto,Burkhard König,Ruth M. Gschwind
标识
DOI:10.1002/anie.202412972
摘要
Abstract Polymeric carbon nitride has attracted significant interest in heterogeneous photocatalysis due to its activity under visible‐light irradiation. Herein, we report on using carbon nitride‐coated NMR tubes for in situ studies of photocatalytic reaction mechanisms. In a first step, we exploited carbon nitride‐coated crimp vials as batch photoreactors for visible photocatalytic fluorinations of unactivated C(sp 3 )−H bonds, with moderate to excellent yields and reusability over multiple cycles. Eventually, carbon nitride‐coated NMR tubes were used as a photoreactor by coupling them with optical fiber irradiation directly inside the spectrometer. This enabled us to follow the reaction with in situ NMR spectroscopy identifying reactive intermediates otherwise elusive in conventional analyses. The method provides advantages for the study of photocatalytic mechanisms of complex reactions and substantially reduces the need of comparative tests for depicting reaction intermediates and conversion pathways.
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