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Menghan Liu¹, Xiuqi Fan¹, Zhe Li¹

¹College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, China.

Analytica chimica acta

|November 15, 2025

概括

开发了具有较长发光寿命的新型 (III) 复合物,用于杀虫剂检测. 一个硫原子增强了性能,使得即使在复杂的样本中,也可以使用时间分辨率的发射光谱检测敏感的马拉.

科学领域:

协调化学协调化学
材料科学材料科学材料科学
分析化学分析化学

背景情况:

开发具有长寿命的发光材料对于先进的传感应用至关重要.
(III) 复合物是有希望的候选物,因为它们具有可调节的光物理性质.
现有的检测方法经常在复杂矩阵中与干扰作斗争.

研究的目的:

设计和合成具有延长发光寿命的新型 (III) 复合物.
研究这些复合体的结构-光物理性质关系.
开发一种灵敏的发光平台,用于使用时间解析发射光谱 (TRES) 检测农药.

主要方法:

合成了两种新型系列的 (III) 复合物 (a1-a4和b1-b4).
系统地研究结构-光物理性质关系,重点关注硫合并的影响.
开发一个双机制传感平台,涉及聚多巴胺 (PDA) 火和胆 (TCh) 抑制的多巴胺 (DA) 聚合,用于检测马拉 (MAL).
使用时间分辨率发射光谱 (TRES) 来检测MAL,特别是在具有挑战性的高光矩阵中.

主要成果:

在合成的 (III) 复合物中,加入硫原子显著延长了发光寿命和提高了量子产量.
复合体b3作为TRES探针表现出了卓越的性能,寿命延长 (1.665μs) 和PDA的高火效率.
为MAL检测建立了一个敏感的发光平台,其超低检测极限 (LOD) 为0.32nM.
使用TRES在高度光的Rhodamine B (RhB) 矩阵中实现了有效的MAL检测 (LOD = 13.2 nM),其中稳定状态发射光谱 (SSES) 失败了.

结论:

具有硫原子的新型 (III) 复合物可提供延长发光寿命和提高量子产量.
开发的发光平台,利用复杂的b3和双火机制,提供高度敏感和选择性的马拉检测.
时间分辨率发射光谱 (TRES) 是一种强大的技术,用于检测复杂的光环境中的分析物,克服了传统方法的局限性.
这项研究扩大了TRES探针的实用性,并为环境农药监测提供了一个有希望的方法.

关键词:

光检测的检测方法长时间的发光寿命发光的Ir (III) 复合体金属复合物的金属复合物有机的农药杀虫剂

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