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Core-Shell Structured Layered Lanthanide-Organic Complexes with Stilbazolium-type Dye Encapsulation for Multifunctional Performances.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2019-11-20 , DOI: 10.1002/asia.201901353
Li-Ming Zhao 1 , Xia-Qiang Shen 1 , Qian Liu 1 , Wei Wu 1 , Hao-Hong Li 1 , Zhi-Rong Chen 1 , Yi Li 1
Affiliation  

Host-guest encapsulation of functional organic dye into a porous metal-organic framework can give rise to the development of new functional materials. In this work, by intercalating the stilbazolium-type dye (DEAST)I (4'-diethylamino-N-methyl stilbazolium) into four lanthanide layered metal-organic complexes (Ln-LMOCs), i. e. {[Ln(BTB)(H2 O)2 ]⋅3(DMF)⋅2(H2 O)}n (Ln=La (1), Nd (2), Sm (3), Er (4)), four responsive (DEAST)I@Ln-LMOC composites have been prepared, serving as multifunctional performance platform. The core-shell structures of (DEAST)I@Ln-LMOC composites have been fully characterized by IR, UV/Vis, PXRD, SEM, TEM, TGA and ESR. Significantly, after intercalation of dyes, the (DEAST)I@Ln-LMOC composites exhibit enhanced luminescent sensing properties in detecting Fe3+ with much higher water stabilities. The luminescent sensing behavior stems from the fluorescence resonance energy transfer (FRET) from the π-electron-rich BTB ligands to the Fe3+ , and their higher water stabilities are induced by electrostatic interactions and lower porosity. Specially, the characteristic emissions of Sm3+ will not be affected after the encapsulation guest dyes, which provide a theoretical guide for the modulation of luminescence devices. Finally, better ion conductivities and diminished photocurrents can be achieved after the embedding of the functional organic dye. In all, the formation of (DEAST)I@Ln-LMOC composites with core-shell structures can be utilized as a multifunctional platform with good stability.

中文翻译:

具有Stilbazolium型染料封装的核-壳结构层状镧系元素-有机配合物,具有多功能性能。

功能性有机染料在客体中的包封到多孔的金属有机骨架中可以促进新功能材料的开发。在这项工作中,通过将stilbazolium型染料(DEAST)I(4'-二乙氨基-N-甲基stilbazolium)插入四个镧系元素层状金属-有机络合物(Ln-LMOCs),即{[Ln(BTB)(H2 O )2]⋅3(DMF)⋅2(H2 O)} n(Ln = La(1),Nd(2),Sm(3),Er(4)),四响应(DEAST)I @ Ln-LMOC复合材料已经准备好,可以作为多功能性能平台。(DEAST)I @ Ln-LMOC复合材料的核-壳结构已通过IR,UV / Vis,PXRD,SEM,TEM,TGA和ESR进行了充分表征。值得注意的是,在插入染料后,(DEAST)I @ Ln-LMOC复合材料在检测Fe3 +时具有增强的发光传感性能,并具有更高的水稳定性。发光感测行为源于从富含π电子的BTB配体向Fe3 +的荧光共振能量转移(FRET),其较高的水稳定性是由静电相互作用和较低的孔隙度引起的。特别地,包封客体染料后,Sm3 +的特征发射将不会受到影响,这为发光器件的调制提供了理论指导。最后,在嵌入功能性有机染料后,可以获得更好的离子电导率和减小的光电流。总之,具有核-壳结构的(DEAST)I @ Ln-LMOC复合材料的形成可以用作具有良好稳定性的多功能平台。由于静电作用和较低的孔隙率,它们具有较高的水稳定性。特别地,包封客体染料后,Sm3 +的特征发射将不会受到影响,这为发光器件的调制提供了理论指导。最后,在嵌入功能性有机染料后,可以获得更好的离子电导率和减小的光电流。总之,具有核-壳结构的(DEAST)I @ Ln-LMOC复合材料的形成可以用作具有良好稳定性的多功能平台。由于静电作用和较低的孔隙率,它们具有较高的水稳定性。特别地,包封客体染料后,Sm3 +的特征发射将不会受到影响,这为发光器件的调制提供了理论指导。最后,在嵌入功能性有机染料后,可以获得更好的离子电导率和减小的光电流。总之,具有核-壳结构的(DEAST)I @ Ln-LMOC复合材料的形成可以用作具有良好稳定性的多功能平台。嵌入功能性有机染料后,可以获得更好的离子电导率和降低的光电流。总之,具有核-壳结构的(DEAST)I @ Ln-LMOC复合材料的形成可以用作具有良好稳定性的多功能平台。嵌入功能性有机染料后,可以获得更好的离子电导率和降低的光电流。总之,具有核-壳结构的(DEAST)I @ Ln-LMOC复合材料的形成可以用作具有良好稳定性的多功能平台。
更新日期:2019-12-17
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