Photoluminescence Properties and Stable Bipolar Resistive Switching Behavior of Two Eu(III)-Doped Hexameric Selenotungstates

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-09-23 DOI:10.1021/acs.inorgchem.5c02943

Wen-Jun Mi, Xue-Ru Zhou, Guang-Qu Ke, Yi-Ping Chen, Hao-Hong Li

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Abstract

Due to their structural versatility, selenotungstates have emerged as a prominent research focus in polyoxometalate (POT) chemistry. Two Eu(III)-doped hexameric selenotungstates with distinct architectures were synthesized via a one-pot synthetic strategy. Detailed structural investigations were prompted by their remarkable photoluminescence lifetimes of 759.8 μs (1) and 722.8 μs (2), significantly surpassing those of most reported Eu(III)-doped polyoxotungstates. Comparative analysis with literature precedents revealed a strong correlation between the luminescent behavior and the coordination environment of the Eu(III) centers. Furthermore, the compounds exhibited exceptional resistive switching performance at ambient conditions, with switching ratios of 1.03 × 10³ (1) and 3.67 × 10³ (2) that exceed most reported values for oligomeric POT-based systems. This work systematically investigates the structure–property relationships among molecular architectures, luminescent characteristics, and resistive switching behavior, providing experimental evidence for the design of new luminescent materials and molecular storage devices.

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两种Eu（III）掺杂六聚硒钨酸盐的光致发光特性和稳定的双极电阻开关行为

硒钨酸盐由于其结构的通用性，已成为多金属氧酸盐（POT）化学中的一个重要研究热点。采用一锅法合成了两种结构不同的Eu（III）掺杂六聚硒钨酸盐。它们的光致发光寿命分别为759.8 μs(1)和722.8 μs(2)，大大超过了大多数报道的Eu（III）掺杂多氧钨酸盐。与文献的对比分析表明，Eu（III）中心的发光行为与配合环境有很强的相关性。此外，这些化合物在环境条件下表现出优异的电阻开关性能，其开关比为1.03 × 103(1)和3.67 × 103(2)，超过了大多数报道的基于低聚物的pot系统的值。本工作系统地研究了分子结构、发光特性和电阻开关行为之间的结构-性能关系，为新型发光材料和分子存储器件的设计提供了实验依据。

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.