Yuanhua Li, Kejun Feng, Mingzhu Li, Huiling Li, Weiluo Zhang, Xiaofang Yang, Yuan Chen, Lei Zheng, ShihHuan Hsieh, Binghua Yan
The overuse of tetracycline (TC) has led to the accumulation of antibiotic residues in drinking water and animal products, which can consequently lead to bacteria resistance and chronic disease in humans. Urgently addressing the need for a rapid, user-friendly, and point-of-care test for TC detection. In this work, we use cyclen and citric acid to synthesise carbon dots (CDs) with a unique ring-shaped structure on their surface and combine them with europium (Eu3+ ) to form an Eu-CDs fluorescent probe. In the presence of TC in aqueous systems, the Eu-CDs probe emits two distinctive fluorescent signals: the stable blue emission from cyclen-modified CDs and the red emission from Eu3+ ,showing a proportional increase with TC concentration...
March 24, 2024: Environmental Technology