量子产额
荧光
沸石咪唑盐骨架
咪唑酯
化学
检出限
金属有机骨架
盐酸四环素
生物分析
四环素
纳米团簇
咪唑
纳米技术
材料科学
吸附
色谱法
无机化学
有机化学
抗生素
物理
量子力学
生物化学
作者
Shano M. Pirot,Khalid M. Omer
标识
DOI:10.1186/s40543-022-00333-6
摘要
Abstract Metal–organic frameworks (MOFs) with high stability and porosity have gained great attention in bioanalysis due to their potential in improving sensitivity and robustness of assays. Herein, to improve both the stability and the emission intensity of Cu nanoclusters (CuNCs), in situ entrapment strategy of CuNCs into zeolitic imidazolate framework-8 (ZIF-8) is described. Blue emissive and stable CuNCs was prepared, for the first time, using thiamine hydrochloride as capping agents, and showed strong and stable emission at 440 nm when excited at 375 nm with fluorescence quantum yields 12%. Encapsulation of CuNC into ZIF-8 showed dramatic enhancement of the fluorescence intensity up to 53% fluorescence quantum yield. Furthermore, the CuNCs@ZIF-8 possesses better stability (more than three months) due to protective and confinement effect of MOFs. Upon the addition of tetracycline to CuNCs@ZIF-8 solution, the blue emission intensity was significantly decreased. The fluorescence ratio (Fo/F) against the concentration of tetracycline exhibited a satisfactory linear relationship from 1.0 to 10.0 µM with a detection limit (LOD) of 0.30 µM. The current probe was applied for quantification of tetracycline in drug sample with satisfactory accuracy and precision. Graphical abstract
科研通智能强力驱动
Strongly Powered by AbleSci AI