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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Multi-component assembly and photophysical properties of europium polyoxometalates and polymer functionalized (mesoporous) silica through a double functional ionic liquid linker
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Multi-component assembly and photophysical properties of europium polyoxometalates and polymer functionalized (mesoporous) silica through a double functional ionic liquid linker

机译：多金属氧ox和聚合物功能化（介孔）二氧化硅通过双功能离子液体连接剂的多组分组装和光物理性质

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In this paper, we put forward a strategy to assemble a novel series of multi-component photofunctional hybrid materials (named as Eu-Si-P1(2,3)) centered with europium polyoxometalates (Na_9EuW_(10)O _(36)·32H_2O, abbreviated as EuW10) and polyester modified silane (P1-Si, P2-Si, P3-Si, P1 = poly glycohol, P2 = bis(2-hydroxyethyl)ether, P3 = 2-hydroxyethyl methacrylate) through an ionic liquid compound (1-methyl-3-(trimethoxysilylpropyl) imidazolium chloride, IM~+Cl~-) as the double functional linker. Furthermore, using Pluronic P123 surfactant as a template to control the sol-gel process of organically modified siloxane precursors, Eu-SBA15-P1(2,3) hybrids with mesoporous silica are constructed correspondingly. The results reveal that Eu-Si-P1(2,3) hybrids present the lower red/orange intensity ratio, longer lifetime and higher quantum yield than Eu-SBA15-P1(2,3) hybrids. The luminescent lifetime and quantum efficiency of Eu-Si-P1(2,3) hybrids are comparable with EuW10 compounds in spite of their low concentration of photoactive EuW10, which is important for practical applications. The CIE chromatic coordinates of some systems are close to the cool-white region and can be expected to be utilized as cool white lighting (close to sunlight).
机译：本文提出了一种以多金属氧化series（Na_9EuW_（10）O _（36）·）为中心的新型多组分光功能杂化材料（名为Eu-Si-P1（2,3））的组装策略。 32H_2O（缩写为EuW10）和聚酯改性的硅烷（P1-Si，P2-Si，P3-Si，P1 =聚乙二醇，P2 =双（2-羟乙基）醚，P3 =甲基丙烯酸2-羟乙酯） （1-甲基-3-（三甲氧基甲硅烷基丙基）咪唑鎓氯化物，IM〜+ Cl〜-）作为双功能接头。此外，以Pluronic P123表面活性剂为模板来控制有机改性的硅氧烷前体的溶胶-凝胶过程，相应地构建了Eu-SBA15-P1（2,3）与中孔二氧化硅的杂化物。结果表明，与Eu-SBA15-P1（2,3）杂种相比，Eu-Si-P1（2,3）杂种具有较低的红色/橙色强度比，更长的寿命和更高的量子产率。 Eu-Si-P1（2,3）杂化物的发光寿命和量子效率与EuW10化合物相当，尽管它们的光敏EuW10浓度很低，这对实际应用很重要。某些系统的CIE色坐标接近冷白色区域，可以预期将其用作冷白色照明（靠近阳光）。

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