原位掺杂高量子产率镧系元素发光MOF平台的构建及其温度传感性能,Inorganic Chemistry

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原位掺杂高量子产率镧系元素发光MOF平台的构建及其温度传感性能
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-06-12 , DOI: 10.1021/acs.inorgchem.3c00498
Shiying Liu ₁ , Wei Liu ₂ , Yiliang Sun ₂ , Weisheng Liu ₁

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镧系元素发光MOF材料表现出优异的发光性能。然而，获得具有高量子产率的稀土发光MOF是一项具有挑战性的研究。利用5-磺基间苯二甲酸单钠盐(NaH ₂ SIP)和Bi(NO ₃ ) ₃ ·5H ₂ O ，通过溶剂热法构建了一种新型铋基金属有机骨架[Bi(SIP)(DMF) ₂ ]。通过原位掺杂不同的镧系金属离子，获得了不同发光性能的掺杂MOFs（Ln-Bi-SIP，Ln=Eu、Tb、Sm、Dy、Yb、Nd、Er），其中Eu-Bi-SIP 、Tb-Bi-SIP、Sm-Bi-SIP 和 Dy-Bi-SIP 具有高量子产率。特殊的是Ln ^{3+的掺杂量}离子含量非常低，掺杂的MOF可以实现高发光量子产率。Eu ³⁺ /Tb ³⁺共掺杂得到的EuTb-Bi-SIP和Dy-Bi-SIP在较宽的温度范围内表现出良好的温度传感性能，最大灵敏度S _r分别为1.6%·K ^–1 (433 K)和2.6 %·K ^–1分别 (133 K)，而循环实验在测定温度范围内也显示出良好的重复性。最后，考虑到实际应用价值，将EuTb-Bi-SIP与有机聚合物聚甲基丙烯酸甲酯（PMMA）共混制成薄膜，在不同温度下表现出不同的颜色变化。

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Construction of High Quantum Yield Lanthanide Luminescent MOF Platform by In Situ Doping and Its Temperature Sensing Performance

Lanthanide luminescent MOF materials show excellent luminescent properties. However, obtaining lanthanide luminescent MOFs with high quantum yield is a challenging research. A novel bismuth-based metal-organic framework [Bi(SIP)(DMF)₂] was constructed by solvothermal method, utilizing 5-sulfoisophthalic acid monosodium salt (NaH₂SIP) and Bi(NO₃)₃·5H₂O. Thereafter, doped MOFs (Ln-Bi-SIP, Ln = Eu, Tb, Sm, Dy, Yb, Nd, Er) with different luminescent properties have been obtained by in situ doping with different lanthanide metal ions, among which Eu-Bi-SIP, Tb-Bi-SIP, Sm-Bi-SIP, and Dy-Bi-SIP have high quantum yield. What is special is that the doping amount of Ln³⁺ ions is very low, and the doped MOF can achieve high luminescence quantum yields. EuTb-Bi-SIP obtained by Eu³⁺/Tb³⁺ codoping and Dy-Bi-SIP exhibit good temperature sensing performance over a wide temperature range with the maximum sensitivity S_r of 1.6%·K^–1 (433 K) and 2.6%·K^–1, respectively (133 K), while the cycling experiments also show good repeatability in the assay temperature range. Finally, considering the practical application value, EuTb-Bi-SIP was blended with an organic polymer poly(methyl methacrylate) (PMMA) to produce a thin film, which shows different color changes at different temperatures.

更新日期：2023-06-12

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