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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >A new TPE-based tetrapodal ligand and its Ln(III) complexes: multi-stimuli responsive AIE (aggregation-induced emission)/ILCT(intraligand charge transfer)-bifunctional photoluminescence and NIR emission sensitization
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A new TPE-based tetrapodal ligand and its Ln(III) complexes: multi-stimuli responsive AIE (aggregation-induced emission)/ILCT(intraligand charge transfer)-bifunctional photoluminescence and NIR emission sensitization

机译:一种新的基于TPE的四足配体及其Ln(III)配合物:多刺激响应AIE(聚集诱导发射)/ ILCT(配体内电荷转移)-双功能光致发光和NIR发射敏化

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摘要

A tetrapodal zwitterionic-type ligand featuring both AIE (aggregation-induced emission) and ILCT (intra-ligand charge transfer) properties, namely 1,1', 1'', 1'''-(4,4', 4'', 4'''-(ethene-1,1,2,2-tetrayl) tetrakis(benzene-4,1-diyl)) tetrakis(methylene) tetrapyridin-4(1H)-one (TPE-4PO) has been designed and applied to the assembly of lanthanide complexes LIFM-21(Ln) (Ln = Sm, Eu, Gd, Tb and Dy). Apart from sensitization of NIR emission of Sm3+ and Dy3+, the resulting ligand and lanthanide complexes show both AIE and ILCT-related photoluminescence behaviors. The photo-response of this system to different aggregation states, solvents' polarity and mechanical grinding was demonstrated by distinguishable emission intensities and colours.
机译:具有AIE(聚集诱导发射)和ILCT(配体内电荷转移)性质的四足两性离子型配体,即1,1',1'',1'''-(4,4',4'' ,已设计了4'''-(乙烯-1,1,2,2-四基)四(苯-4,1-二基)四(亚甲基)四吡啶-4(1H)-一(TPE-4PO)并应用于镧系元素复合物LIFM-21(Ln)(Ln = Sm,Eu,Gd,Tb和Dy)的组装。除了敏化Sm3 +和Dy3 +的NIR发射外,所得配体和镧系元素配合物还显示出AIE和ILCT相关的光致发光行为。通过不同的发射强度和颜色证明了该体系对不同聚集态,溶剂极性和机械研磨的光响应。

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