二价二卤化铕EuX2 （X = Cl, Br）溶液的光物理特性烷基铝对Eu2+离子发光的增强作用

IF 0.48 Q4 Physics and Astronomy

Bulletin of the Russian Academy of Sciences: Physics Pub Date : 2025-05-05 DOI:10.1134/S1062873824710249

R. G. Bulgakov, D. I. Galimov, S. M. Yakupova, K. S. Vasilyuk

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引用次数: 0

摘要

本文首次详细研究了EuCl2和EuBr2二卤化物在四氢呋喃溶液中的光物理性质。测定了Eu2+*离子的吸收、光致发光（4f65d1→4f7跃迁）、激发光谱、光致发光产率和寿命。由于EuCl2和EuBr2与烷基铝相互作用形成的四中心配合物具有刚性结构，因此在烷基铝存在下，Eu2+离子的发光强度增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Photophysical Characteristics of Solutions of Divalent Europium Dihalides EuX2 (X = Cl, Br). Aluminum Alkyls as Enhancers of Luminescence of the Eu2+ Ion

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Photophysical Characteristics of Solutions of Divalent Europium Dihalides EuX2 (X = Cl, Br). Aluminum Alkyls as Enhancers of Luminescence of the Eu2+ Ion

The photophysical properties of solutions of EuCl₂ and EuBr₂ dihalides in tetrahydrofuran have been studied in detail for the first time. The absorption, photoluminescence (4f⁶5d¹ → 4f⁷ transition), and photoluminescence excitation spectra as well as photoluminescence yields and lifetimes of excited Eu²⁺* ions were measured. The effect of increasing the luminescence intensity of the Eu²⁺ ion in the presence of aluminum alkyls was detected due to the rigid structure of a four-center complex formed by the interaction of EuCl₂ and EuBr₂ with aluminum alkyls.

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来源期刊

Bulletin of the Russian Academy of Sciences: Physics Physics and Astronomy-Physics and Astronomy (all)

CiteScore

0.90

自引率

0.00%

发文量

251

期刊介绍： Bulletin of the Russian Academy of Sciences: Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It presents full-text articles (regular, letters to the editor, reviews) with the most recent results in miscellaneous fields of physics and astronomy: nuclear physics, cosmic rays, condensed matter physics, plasma physics, optics and photonics, nanotechnologies, solar and astrophysics, physical applications in material sciences, life sciences, etc. Bulletin of the Russian Academy of Sciences: Physics focuses on the most relevant multidisciplinary topics in natural sciences, both fundamental and applied. Manuscripts can be submitted in Russian and English languages and are subject to peer review. Accepted articles are usually combined in thematic issues on certain topics according to the journal editorial policy. Authors featured in the journal represent renowned scientific laboratories and institutes from different countries, including large international collaborations. There are globally recognized researchers among the authors: Nobel laureates and recipients of other awards, and members of national academies of sciences and international scientific societies.