Details

Autor(en) / Beteiligte

• Hong, Qing
• Yang, Hong
• Fang, Yanfeng
• Li, Wang
• Zhu, Caixia
• Wang, Zhuang
• Liang, Sicheng
• Cao, Xuwen
• Zhou, Zhixin
• Shen, Yanfei
• Liu, Songqin
• Zhang, Yuanjian

Titel

Adaptable graphitic C6N6-based copper single-atom catalyst for intelligent biosensing

Ist Teil von

• Nature communications, 2023-05, Vol.14 (1), p.2780-2780, Article 2780

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2023

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Abstract 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 C 6 N 6 -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 Cu SA C 6 N 6 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. Cu SA C 6 N 6 is further applied to a glucose biosensor, which can intelligently switch sensitivity and linear detection range in vitro.