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.
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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DOI：
10.1039/c5dt03640b
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发表时间：
2016-01
影响因子：
4
通讯作者：
Yixuan Zhu;Zhang-Wen Wei;Mei Pan;Hai-Ping Wang;Jianyong Zhang;C. Su
中科院分区：
文献类型：
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作者：
Yixuan Zhu;Zhang-Wen Wei;Mei Pan;Hai-Ping Wang;Jianyong Zhang;C. Su
一种四足两性离子型配体，（聚集诱导发射）和ILCT（配体内电荷转移）性质，即1，1“，1 "”，1“”-（4，4 '，4''，4'''-（乙烯-1，1，2，2-四基）四（苯-4，1-diyl））tetrakis设计并合成了4-（亚甲基）四吡啶-4（1H）-酮（TPE-4PO），并将其应用于稀土配合物LIFM-21（Ln）（Ln = Sm，Eu，Gd，Tb和Dy）的组装.除了对Sm（3+）和Dy（3+）的近红外发射有敏化作用外，所得配体和稀土配合物还表现出与AIE和ILCT相关的光致发光行为。该体系对不同聚集态、溶剂极性和机械研磨的光响应由可区分的发射强度和颜色证明。
A tetrapodal zwitterionic-type ligand featuring both AIE (aggregation-induced emission) and ILCT (intraligand 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 Sm(3+) and Dy(3+), 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.