基于水中Fe³⁺荧光传感器的制备及性能研究

Investigation and Evaluation of a Water-Based Fe³⁺ Fluorescent Sensor: Preparation and Performance Study

摘要: Fe³⁺作为人体新陈代谢中必不可少的金属元素，在血红蛋白、肌肉和大脑功能中起着至关重要的作用。然而，当Fe³⁺浓度过高时，不仅会污染水体，而且一旦被人体过量摄入，会导致铁中毒，引起呕吐和腹泻，甚至危及生命。由于Fe³⁺对生态环境和人类的高危害风险，快速准确地检测它们至关重要。本文选择吡啶-2,6-二甲酸作为有机配体，溶剂热法制备了一个具有稀土特征发光的配合物TbL。TbL可以在其他金属离子(即Ag⁺、Al³⁺、Ca²⁺、Cd²⁺、Co²⁺、Cu²⁺、Hg²⁺、K⁺、Mg²⁺、Na⁺、Ni²⁺、Pb²⁺和Zn²⁺)存在的情况下检测Fe³⁺，检测限μM。并且具有较高的灵敏度以及较好的选择性。这项研究提供了一种简单有效的方法来开发一种荧光探针，用于定量有效地检测水样中的Fe³⁺。

Abstract: Fe³⁺, as an essential metal element in human metabolism, plays a crucial role in hemoglobin, muscle, and brain function. However, when the concentration of Fe³⁺ is too high, it not only pollutes the water, but also causes iron poisoning, vomiting and diarrhea, and even endangers life if ingested excessively by the human body. Due to the high risk of Fe³⁺ to the ecological environment and humans, it is crucial to quickly and accurately detect them. This article selects pyridine-2,6-dicarboxylic acid as the organic ligand and prepares a complex TbL with rare earth characteristic luminescence by solvothermal method. TbL can detect Fe³⁺ in the presence of other metal ions (i.e. Ag⁺, Al³⁺, Ca²⁺, Cd²⁺, Co²⁺, Cu²⁺, Hg²⁺, K⁺, Mg²⁺, Na⁺, Ni²⁺, Pb²⁺, Zn²⁺), with detection limits μM. And it has high sensitivity and good selectivity. This study provides a simple and effective method for developing a fluorescent probe for the quantitative and effective detection of Fe³⁺in water samples.