催化作用
铜
生物传感器
化学
Atom(片上系统)
材料科学
纳米技术
计算机科学
冶金
生物化学
嵌入式系统
作者
Quan Hong,Hong Yang,Yang Fang,Wang Li,Changlian Zhu,Zhuang Wang,Sisi Liang,Xuwen Cao,Zhixin Zhou,Yanfei Shen,Songqin Liu,Yuanjian Zhang
标识
DOI:10.1038/s41467-023-38459-9
摘要
Self-adaptability is highly envisioned for artificial devices such as robots with chemical noses. For this goal, seeking catalysts with multiple and modulable reaction pathways is promising but generally hampered by inconsistent reaction conditions and negative internal interferences. Herein, we report an adaptable graphitic C6N6-based copper single-atom catalyst. It drives the basic oxidation of peroxidase substrates by a bound copper-oxo pathway, and undertakes a second gain reaction triggered by light via a free hydroxyl radical pathway. Such multiformity of reactive oxygen-related intermediates for the same oxidation reaction makes the reaction conditions capable to be the same. Moreover, the unique topological structure of CuSAC6N6 along with the specialized donor-π-acceptor linker promotes intramolecular charge separation and migration, thus inhibiting negative interferences of the above two reaction pathways. As a result, a sound basic activity and a superb gain of up to 3.6 times under household lights are observed, superior to that of the controls, including peroxidase-like catalysts, photocatalysts, or their mixtures. CuSAC6N6 is further applied to a glucose biosensor, which can intelligently switch sensitivity and linear detection range in vitro.
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