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Tuneable Emission of Polyhedral Oligomeric Silsesquioxane Based Nanostructures that Self‐Assemble in the Presence of Europium(III) Ions: Reversible trans‐to‐cis Isomerization
ChemPlusChem ( IF 3.4 ) Pub Date : 2020-02-24 , DOI: 10.1002/cplu.202000064
Valerio Cinà 1, 2 , Esther Carbonell 1 , Luca Fusaro 1 , Hermenegildo García 3 , Michelangelo Gruttadauria 2 , Francesco Giacalone 2 , Carmela Aprile 1
Affiliation  

The Cover Feature shows polyhedral oligomeric silsesquioxane (POSS) based nanocages functionalized with terpyridine ligands (represented by the pincers) attached through alkenyl moities. The trans‐POSS (blue‐emitting structure) can easily coordinate Eu(III) cations, resulting in a red‐emitting nanostructure. UV‐irradiation of the Eu@trans‐POSS causes the release of the Eu(III) ions due to the formation of the cis‐POSS isomer whose free (non‐complexed) form emits in the green. After thermal treatment the cis‐POSS can be completely converted into the trans isomer and the cycle can be repeated. More information can be found in the Full Paper by Aprile, Carbonell, Giacalone, and co‐workers (DOI: 10.1002/cplu.201900575).
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中文翻译:

在h(III)离子存在下自组装的基于多面体低聚倍半硅氧烷的纳米结构的可调谐发射:可逆的顺式-顺式异构化

封面特征显示了基于多面体低聚倍半硅氧烷(POSS)的纳米笼,该纳米笼具有通过烯基部分连接的三联吡啶配体(由钳子表示)。的反式-POSS(蓝色发光结构)可以很容易地协调铕(III)阳离子,得到红色的发光纳米结构。Eu @ trans- POSS的紫外线照射会导致Eu(III)离子释放,这是由于顺式POSS异构体的形成,其游离(未络合)形式以绿色发射。热处理后,顺式-POSS可完全转化为反式异构体和循环可以重复。有关更多信息,请参见Aprile,Carbonell,Giacalone和其同事的论文全文(DOI:10.1002 / cplu.201900575)。
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更新日期:2020-02-24
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