Key Laboratory of Photochemical Biomaterials and Energy Storage Materials, Heilongjiang Province, Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education, College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, Heilongjiang Province, China.
College of Computer Science and Information Engineering, Harbin Normal University, Harbin, Heilongjiang 150025, Heilongjiang Province, China.
Food Chem. 2024 Jul 15;446:138843. doi: 10.1016/j.foodchem.2024.138843. Epub 2024 Feb 24.
Heavy metals cause serious toxic threats to both environment and human health. The multivariate, instrument-free, portable, and rapid detection strategy is crucial for determination of heavy metals. Herein, aggregation-induced emission (AIE) featured carbon dots (SN-CDs) were fabricated hydrothermally by optimizing co-doping precursors. With bright yellow emission at 560 nm, the SN-CDs were utilized for multivariate sensing Cu, Hg and bovine serum albumin (BSA) based on AIE behavior and static quenching effect, with detection limits of 0.46 μmol·L, 25.8 nmol·L and 1.52 μmol·L. A portable smartphone platform was constructed to enable portable, prompt, and sensitive analysis for Cu, Hg, and BSA via different strategies in real water and food samples with satisfied recovery. Moreover, a logic gate circuit was designed to provide the possibilities for utilization of intelligent facility. The proposed AIE SN-CDs possessing great contribution in preferable sensing performance, present promising prospects in real-time monitoring of environment and food safety.
重金属对环境和人类健康都造成了严重的毒害威胁。多元、无仪器、便携和快速的检测策略对于重金属的测定至关重要。在此，我们通过优化共掺杂前体制备了具有聚集诱导发光（AIE）特性的碳点（SN-CDs）。SN-CDs 呈现出明亮的黄色发射峰（560nm），可基于 AIE 行为和静态猝灭效应，多元传感 Cu、Hg 和牛血清白蛋白（BSA），检测限分别为 0.46μmol·L、25.8nmol·L 和 1.52μmol·L。构建了一个便携式智能手机平台，通过不同策略，在实际水样和食品样中进行 Cu、Hg 和 BSA 的便携、快速和灵敏分析，回收率令人满意。此外，还设计了一个逻辑门电路，为智能设备的应用提供了可能性。所提出的 AIE SN-CDs 在优异的传感性能方面具有重要意义，为实时监测环境和食品安全提供了广阔的前景。
