带隙
材料科学
石墨烯
氮化碳
分解水
光电化学
氮化物
悬空债券
石墨氮化碳
碳纤维
生物传感器
纳米技术
化学
光电子学
光催化
物理化学
电化学
有机化学
电极
图层(电子)
硅
催化作用
复合材料
复合数
作者
Hong Yang,Qing Zhou,Zhengzou Fang,Wang Li,Y. Zheng,Jin Ma,Zhuang Wang,Lufang Zhao,Songqin Liu,Yanfei Shen,Yuanjian Zhang
出处
期刊:Chem
[Elsevier]
日期:2021-10-01
卷期号:7 (10): 2708-2721
被引量:73
标识
DOI:10.1016/j.chempr.2021.06.010
摘要
As an analog of graphene, carbon nitrides have drawn increasing attention, ranging from artificial photosynthesis to synthetic organic chemistry. Notably, the most studied polymeric, C3N4, and other stoichiometric ones, such as C3N5, C4N3, and C3N, are commonly employed repetitive units of six-membered rings. Building blocks of five-membered rings (FMRs) are also fascinating and prevalent from a fundamental point of view, but FMR-based carbon nitrides are scarcely reported. Here, we propose a stable FMR-based C3N2 and the kinetic-oriented synthesis method via a pre-stabilization strategy using abundant-available zeolitic imidazolate framework as a precursor. The FMR topological structure and the associated dangling bonds were disclosed in C3N2, leading to an interesting p-π conjugation and splitting molecular orbitals, which remarkably narrowed the optical bandgap unusually down to 0.81 eV. The as-obtained C3N2 was further successfully applied to real-time, dynamic, and quantitative photoelectrochemical biosensing for practical non-transparent biosamples under near-infrared light irradiation.
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