Li Ruidan, Tian Li, Song Yujia, Guo Yanjia, Ma Guangping, Han Pengfei, Jiang Hanyue, Wang Wenzhuo, Lu Juan
College of Chemistry, Changchun Normal University, Changchun, 130032, People's Republic of China.
Mikrochim Acta. 2025 Jul 28;192(8):532. doi: 10.1007/s00604-025-07397-2.
The synthesis of self-supporting material ZnMnO₂ by electrospinning and high-temperature calcination is reported. A highly sensitive electrochemiluminescence (ECL) sensor for Amaranth Red (AR) detection was constructed using Luminol@Ti₃AlC₂ and ZnMnO₂ with multi-step signal amplification. Luminol-O served as the ECL probe with luminescent signal originating from its reaction with dissolved oxygen. Ti₃AlC₂ was introduced as the carrier to enhance the effective concentration of the ECL reagent and improve the signal. ZnMnO as the co-reaction promoter could further improve the ECL value. The highest signal was attributed to the combined catalytic action of Luminol@TiAlC and ZnMnO. A new method for the detection of AR was developed due to the resonance energy transfer (RET) between Luminol and AR. Under optimal conditions, the response to AR exhibited a linear range from 5.0 × 10 to 5.0 × 10 mol·L. The sensor achieved satisfactory AR detection in candy samples.
报道了通过静电纺丝和高温煅烧合成自支撑材料ZnMnO₂的方法。使用Luminol@Ti₃AlC₂和ZnMnO₂构建了一种用于苋菜红（AR）检测的高灵敏度电化学发光（ECL）传感器，并进行了多步信号放大。Luminol-O用作ECL探针，其发光信号源于与溶解氧的反应。引入Ti₃AlC₂作为载体以提高ECL试剂的有效浓度并改善信号。ZnMnO作为共反应促进剂可进一步提高ECL值。最高信号归因于Luminol@TiAlC和ZnMnO的联合催化作用。由于Luminol与AR之间的共振能量转移（RET），开发了一种检测AR的新方法。在最佳条件下，对AR的响应呈现出从5.0×10到5.0×10 mol·L的线性范围。该传感器在糖果样品中实现了令人满意的AR检测。
