Eu3+在室温功能化离子液体中的光物理性质：1-丁基-3-甲基咪唑邻甲苯磺酸和1-丁基-3-甲基咪唑间甲苯磺酸：荧光增强研究

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-04-03 DOI:10.1016/j.jlumin.2025.121223

V. Shyamala Devi

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引用次数: 0

摘要

本研究研究了两种新型室温离子液体（1-丁基-3-甲基咪唑- o- tolate和1-丁基-3-甲基咪唑- m- tolate）中Eu3+离子的荧光增强。在这些离子液体的存在下，评估了Eu3+的荧光特性，如发射强度和寿命。这种增强效应归因于RTILs对Eu3+的配体敏化过程，包括它们的非淬灭环境，影响了Eu3+的溶剂化环境和发射性质。这些发现为这些RTILs在离子液体中Eu3+的纳摩尔水平检测中的潜在应用提供了见解。与在水溶液中的Eu3+相比，在邻苯二甲酸盐离子液体中观察到的Eu3+的寿命显着增强，突出了这些介质在传感应用中改善发光性能的潜力。在这项研究中，我们报道了新设计的离子液体的合成和表征。合成方法详细，保证了重现性和高效性。利用红外（IR）光谱、核磁共振（NMR）光谱和质谱进行了综合表征，以确定合成化合物的结构完整性和纯度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Photophysical properties of Eu3+ in functionalized room-temperature ionic liquids: 1-Butyl-3-Methylimidazolium o-toluate and 1-Butyl-3-Methylimidazolium m-toluate: A fluorescence enhancement study

查看原文本刊更多论文

Photophysical properties of Eu3+ in functionalized room-temperature ionic liquids: 1-Butyl-3-Methylimidazolium o-toluate and 1-Butyl-3-Methylimidazolium m-toluate: A fluorescence enhancement study

This study investigates the fluorescence enhancement of Eu³⁺ ions incorporated into two new room-temperature ionic liquids (RTILs), namely 1-Butyl-3-Methylimidazolium o-Toluate and 1-Butyl-3-Methylimidazolium m-Toluate. The fluorescence properties of Eu³⁺, such as emission intensities and lifetimes, were assessed in the presence of these ionic liquids. The enhancement effects are attributed to the ligand sensitization process of Eu³⁺ using RTILs, including their non-quenching environment, which influence the solvation environment and the emission properties of Eu³⁺. The findings offer insights into the potential application of these RTILs in the nanomolar level detection of Eu³⁺ in ionic liquids. The observed lifetime of Eu³⁺ in toluate-based ionic liquids exhibits a significant enhancement compared to its counterpart in aqueous solution, highlighting the potential of these media for improved luminescence performance in sensing applications.

In this study, we report the synthesis and characterization of newly designed ionic liquids. The synthesis method is detailed, ensuring reproducibility and efficiency. Comprehensive characterization was performed using infrared (IR) spectroscopy, nuclear magnetic resonance (NMR) spectroscopy, and mass spectrometry to confirm the structural integrity and purity of the synthesized compounds.

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.