比率型和可视化检测铜离子的半导体聚合物纳米粒子和碳点的荧光纳米杂化材料
Ratiometric and visual determination of copper ions with fluorescent nanohybrids of semiconducting polymer nanoparticles and carbon dots.
机构信息
Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China; School of Chemistry and Chemical Engineering, Hefei Normal University, Hefei 230061, China.
Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Biosensing and Bioimaging, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Jul 5;295:122574. doi: 10.1016/j.saa.2023.122574. Epub 2023 Mar 5.
Developing nanohybrid composition based fluorescent carbon dots (CDs) for ratiometric detection of copper ions is highly appealing. Herein, a ratiometric sensing platform (GCDs@RSPN) for copper ions detection has been developed by loaded green fluorescence carbon dots (GCDs) on the surface of red emission semiconducting polymer nanoparticles (RSPN) through electrostatic adsorption. The GCDs, featuring abundant amino groups, can selectively bind copper ions to induce the photoinduced electron transfer, leading to fluorescence quenching. A good linearity within the range of 0-100 μM is obtained, and the limit of detection (LOD) is 0.577 μM by using obtained GCDs@RSPN as ratiometric probe to detect copper ion. Moreover, the paper-based sensor derived from GCDs@RSPN was successfully applied for the visual detection of Cu.
基于荧光碳点（CDs）的纳米杂化复合材料的比率型铜离子检测具有很大的吸引力。在此，通过静电吸附将绿色荧光碳点（GCDs）负载到红色发射半导体聚合物纳米粒子（RSPN）表面，开发了一种比率型铜离子检测传感平台（GCDs@RSPN）。具有丰富氨基的 GCDs 可以选择性地与铜离子结合，从而诱导光诱导电子转移，导致荧光猝灭。使用所得的 GCDs@RSPN 作为比率探针检测铜离子，在 0-100 μM 范围内获得了良好的线性关系，检测限（LOD）为 0.577 μM。此外，基于 GCDs@RSPN 的纸基传感器成功地用于 Cu 的可视化检测。
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