The chemistry of metal–organic frameworks has been progressing fast with its exciting potential in multifunctional applications. A series of three‐dimensional lanthanide‐based metal–organic frameworks, {[Ln(HTPO)(NO₃)(H₂O)]⋅x(CH₃CN)⋅y(H₂O)}_n (Ln=Eu (1), Tb (2), Gd (3), Sm (4), Dy (5), Nd (6)), {[Eu(TPO)(HCOO)_0.5]⋅(H₃O)_0.5}_n (7), {[Eu(TPO)(DMF)]⋅(solv)_x}_n (8; DMF= N,N‐dimethylformamide), and {[Eu(TPO)(DMA)]⋅(solv)_x}_n (9; DMA=dimethylacetamide) were synthesized with semirigid C₃‐symmetric ligand tris(4‐carboxylphenyl)phosphine oxide (H₃TPO). In these frameworks, the H₃TPO ligand exists in a totally different configuration. Framework 1 exhibits good breathing properties for absorbing more guest molecules through a solvent‐induced single‐crystal‐to‐single‐crystal (SC–SC) transformation involving a configuration transformation of the organic linker in the framework. The ytterbium ion was doped into 1 to improve the luminescent performance (lifetime and quantum yield) of the red europium emission. Among a series of Eu_1−xYb_xTPO samples, Eu_0.88Yb_0.12TPO showed enhanced luminescence intensity (≈5.1 times that of the pure europium system), and the lifetime increased from 1073.08 to 1236.57 μs. Moreover, the porosity of these frameworks allows them to efficiently adsorb dye molecules with high selectivity and efficiency.

中文翻译：

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多功能基于镧系元素的金属有机骨架与多异位配体：掺Y（III）增强发光和选择性染料吸附

金属有机骨架的化学发展迅速，在多功能应用中具有令人兴奋的潜力。一系列的三维镧系元素类金属-有机骨架，{[LN（HTPO）（NO ₃）（H ₂ O）]⋅ X（CH ₃ CN）⋅ Ý（H ₂ O）} _Ñ（Ln为Eu的（1），Tb（2），Gd（3），Sm（4），Dy（5），Nd（6）），{[Eu（TPO）（HCOO）_0.5 ]⋅（H ₃ O）_0.5 } _n（7），{[Eu（TPO）（DMF）]⋅（solv）_x} _n（8 ; DMF = N，N-二甲基甲酰胺）和{[Eu（TPO）（DMA）]⋅（solv）_x } _n（9 ; DMA =二甲基乙酰胺）是用半刚性C ₃对称配体tris（ 4-羧基苯基）氧化膦（H ₃ TPO）。在这些框架中，H ₃ TPO配体以完全不同的构型存在。框架1表现出良好的呼吸特性，可通过溶剂诱导的单晶至单晶（SC-SC）转化（包括框架中有机连接基的构型转化）吸收更多的客体分子。1离子掺入1以改善红the发射的发光性能（寿命和量子产率）。在一系列Eu _{1- x} Yb _x TPO样品中，Eu _0.88 Yb _0.12 TPO显示出增强的发光强度（约为纯euro系统的5.1倍），并且寿命从1073.08增加到了1236.57μs。而且，这些骨架的孔隙率使它们能够以高选择性和高效率有效地吸附染料分子。