向铕 (III) 皂土中添加季铵/膦阳离子后的发光增强效果

IF 5.3 2区地球科学 Q2 CHEMISTRY, PHYSICAL

Applied Clay Science Pub Date : 2024-10-01 DOI:10.1016/j.clay.2024.107584

Gaokuo Du, Huanrong Li, Zixuan Li, Xinchi Ye, Yige Wang

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引用次数: 0

摘要

在皂石粘土的平板中添加季铵/膦阳离子可显著提高β-二酮酸铕（III）配合物的发光效率。通过比较两种具有不同 pKa 值的二酮酸配体以及所选有机盐的 pH 值，并根据静态光谱和时间分辨光谱，阐明了有机阳离子促进发光的机制。可以得出这样的结论：季铵或季膦阳离子的存在有助于通过减少青石粘土小板表面的酸性位点来形成高配位数的 Eu3+-β- 二酮酸配合物。我们的工作进一步增强了获得高发光材料的简易性和通用性，并对季铵/季膦阳离子在促进镧系元素有机-无机杂化材料发光方面的功能提供了独特的见解。

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Luminescence Boosting after adding Quaternary ammonium/Phosphine Cations to Europium (III) Laponite Clay

Quaternary ammonium/phosphine cations added to the platelets of Laponite clay can lead to the remarkable enhancement of luminescence efficiency of the europium (III) β-diketonate complex. The mechanism for the luminescence boosting by the organic cations was elucidated by comparing two diketonate ligands with different pKa and the pH value of the selected organic salts based on the stationery and time resolved spectroscopy. It can be concluded as that the presence of the quaternary ammonium or quaternary phosphine cations helps to form Eu³⁺-β-diketonate complexes with high coordination numbers by decreasing the acidic sites on the platelet surface of laponite clay. Our work further strengthens the simplicity and generalization of obtaining highly luminescent materials and provides a unique insight into the function of the quaternary ammonium/quaternary phosphine cations in boosting the luminescence of lanthanide-based organic-inorganic hybrid materials.

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来源期刊

Applied Clay Science 地学-矿物学

CiteScore

10.30

自引率

10.70%

发文量

289

审稿时长

39 days

期刊介绍： Applied Clay Science aims to be an international journal attracting high quality scientific papers on clays and clay minerals, including research papers, reviews, and technical notes. The journal covers typical subjects of Fundamental and Applied Clay Science such as: • Synthesis and purification • Structural, crystallographic and mineralogical properties of clays and clay minerals • Thermal properties of clays and clay minerals • Physico-chemical properties including i) surface and interface properties; ii) thermodynamic properties; iii) mechanical properties • Interaction with water, with polar and apolar molecules • Colloidal properties and rheology • Adsorption, Intercalation, Ionic exchange • Genesis and deposits of clay minerals • Geology and geochemistry of clays • Modification of clays and clay minerals properties by thermal and physical treatments • Modification by chemical treatments with organic and inorganic molecules(organoclays, pillared clays) • Modification by biological microorganisms. etc...