Polyhedral-oligosilsesquioxane containing poly(methyl methacrylate) perylenebisimide microspheres with high solid state emission
Polyhedral-oligosilsesquioxane containing poly(methyl methacrylate) perylenebisimide microspheres with high solid state emission
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含有高固态发射的聚（甲基丙烯酸甲酯）苝双酰亚胺微球的多面体低聚倍半硅氧烷
DOI：
10.1016/j.dyepig.2016.09.065
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发表时间：
2017-02-01
影响因子：
4.5
通讯作者：
Jiang, Shichun
中科院分区：
文献类型：
--
作者：
Ben, Hai-Jie;Fan, You;Jiang, Shichun
通过分散聚合设计和制备了一系列具有狭窄尺寸分布和强烈固态发射的新型荧光聚（甲基丙烯酸甲酯）微珠。将特征的多面体寡头喹硫代烷引入了per烯双酰亚胺荧光团系统中，以制造聚合微球。用聚接纳到聚（甲基丙烯酸甲酯）主链的聚（12-羟基齿酸）链作为稳定剂，所获得的微球被狭窄，并易于分散，并在动态光散射和扫描电子显微镜测量中显示。样品石油 - 醚分散体的荧光显微镜图像表现出较强的橙色发射，稳定性抗光漂白。更重要的是，由于庞大的多面体寡素硫代基因烷基部分的损害，可以显着抑制perylene Bisimides的聚集诱导的荧光淬灭，因此，微层的固态量子量子产率可以增强至68％，这是perylene bisimosseres沿peryley bisimosseriide的最高记录。出色的发光特性结合了单分散性质和对含有微球的多面体 - 橄榄叶二烷二烷的光漂白的高稳定性，使它们成为制造发光设备的一种有希望的材料。 （c）2016 Elsevier Ltd.保留所有权利。
A series of novel fluorescent poly(methyl methacrylate) microbeads with narrow size distribution and intense solid state emission were designed and prepared by dispersion polymerization. The featured polyhedral oligosilsesquioxane was introduced into the perylene bisimides fluorophore system to fabricate polymeric microspheres. With poly (12-hydroxystearic acid) chains grafted to poly(methyl methacrylate) backbone as stabilizer, the obtained microspheres were narrow distributed as well as easily dispersed which are shown in the dynamic light scattering and scanning electron microscope measurement. Fluorescence microscope images of petroleum-ether dispersion of the sample exhibited strong orange emission with stability against photobleaching. More importantly, due to the steric hindrance of bulky polyhedral oligosilsesquioxane moieties, the aggregation-induced fluorescence quenching of perylene bisimides can be suppressed significantly, thus the solid-state quantum yield of the microspheres can be boosted to 68%, which is the highest record for perylene bisimide along polymeric microspheres. The excellent luminescent property, in combination with the monodisperse nature and the high stability against photobleaching of the polyhedral-oligosilsesquioxane containing microspheres, makes them a kind of promising material for fabrication of luminescent devices. (C) 2016 Elsevier Ltd. All rights reserved.