双发射钐-大环配合物及其对水的高效荧光检测

IF 2.4 3区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Polyhedron Pub Date : 2025-06-25 DOI:10.1016/j.poly.2025.117650

Shuaibo Shi , Sichen Li , Shishen Zhang, Kun Zhang

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引用次数: 0

摘要

开发高选择性和方便的荧光检测技术来监测水（H2O）仍然是各个领域的主要挑战。本文合理设计合成了一种新型荧光传感分子Sm-1f [Sm(HL1f)(NO3)2]， Sm-1f由一个钐离子、一个去质子化的[1 + 1]希夫碱大环HL1f -和两个硝酸盐组成。该配合物Sm-1f具有双发射荧光和可逆结构，因此可作为溶剂响应的候选物。结果表明，Sm-1f在13种常用溶剂中对H2O具有快速、选择性和定量的检测能力。经过对两个通道荧光信号的系统统计分析，Sm-1f对11种溶剂和几种溶剂类似物，特别是H2O和D2O，也有很好的识别能力。机理研究证实，h2o诱导的亚胺键断裂破坏了希夫碱大环的敏化作用，最终导致发射强度显著降低。此外，基于智能手机的RGB分析技术可以实时方便地检测H2O，无需任何复杂的仪器。这项工作不仅为水的检测提供了强大的荧光探针和方便的技术，而且扩大了发光镧系材料的应用范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A dual-emission samarium-macrocycle complex and its high-efficient fluorescence detection of water

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A dual-emission samarium-macrocycle complex and its high-efficient fluorescence detection of water

The development of highly selective and convenient fluorescence detection techniques to monitor water (H₂O) remains a major challenge in various domains. In this article, a novel fluorescence sensing molecule Sm-1_f [Sm(HL1_f)(NO₃)₂] is rationally designed and synthesized, and Sm-1_f consists of a samarium ion, one deprotonated [1 + 1] Schiff-base macrocycle HL1_f⁻ and two nitrates. This complex Sm-1_f then served as a solvent-response candidate in view of its dual-emission fluorescence and reversible structure. As a result, Sm-1_f shows the fast, selective and quantitative detection abilities for H₂O among 13 common solvents. After the systematic statistical analysis for fluorescence signals of two channels, Sm-1_f also demonstrates excellent discrimination of 11 solvents and several pairs of solvent analogues, especially the H₂O and D₂O. Mechanistic studies confirm that the H₂O-induced imine bond cleavage disrupts the sensitization effect of Schiff-base macrocycle which finally leads to a remarkable reduction of emission intensity. Furthermore, the smartphone-based RGB analytical technique enables the real-time and convenient detection of H₂O without any complicated apparatuses. This work not only provides a powerful fluorescence probe and convenient technique for H₂O detection but also expands the application of luminescent lanthanide materials.

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来源期刊

Polyhedron 化学-晶体学

CiteScore

4.90

自引率

7.70%

发文量

515

审稿时长

2 months

期刊介绍： Polyhedron publishes original, fundamental, experimental and theoretical work of the highest quality in all the major areas of inorganic chemistry. This includes synthetic chemistry, coordination chemistry, organometallic chemistry, bioinorganic chemistry, and solid-state and materials chemistry. Papers should be significant pieces of work, and all new compounds must be appropriately characterized. The inclusion of single-crystal X-ray structural data is strongly encouraged, but papers reporting only the X-ray structure determination of a single compound will usually not be considered. Papers on solid-state or materials chemistry will be expected to have a significant molecular chemistry component (such as the synthesis and characterization of the molecular precursors and/or a systematic study of the use of different precursors or reaction conditions) or demonstrate a cutting-edge application (for example inorganic materials for energy applications). Papers dealing only with stability constants are not considered.