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首页> 外文期刊>Journal of Physics. Condensed Matter >Luminescence of colloidal ZnO nanoparticles synthesized in alcohols and biological application of ZnO passivated by MgO
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Luminescence of colloidal ZnO nanoparticles synthesized in alcohols and biological application of ZnO passivated by MgO

机译：醇合成的胶态ZnO纳米粒子的发光及MgO钝化ZnO的生物应用

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This report presents the results of spectroscopic measurements of colloidal ZnO nanoparticles synthesized in various alcohols. Luminescence of colloidal ZnO was monitored under different reaction conditions to elucidate the mechanism of the visible emission. We performed the process in different alcohols, temperatures and reaction times for two different reactants: water and NaOH. Based on the presented and previously published results it is apparent that the luminescence of the nanoparticles is influenced by several competing phenomena: the formation of new nucleation centers, the growth of the nanoparticles and surface passivation. Superimposed on the above effects is a size dependent luminescence alteration resulting from the quantum confinement. The study contributes to our understanding of the origin of ZnO nanoparticles' green emission which is important in a rational design of fluorescent probes for nontoxic biological applications. The ZnO nanoparticles were coated with a magnesium oxide layer and introduced into a HeLa cancer cell.
机译：本报告介绍了在各种醇中合成的胶体ZnO纳米粒子的光谱测量结果。在不同的反应条件下监测胶体ZnO的发光，以阐明可见光发射的机理。我们针对两种不同的反应物：水和氢氧化钠，在不同的醇，温度和反应时间下进行了该过程。基于给出的和先前发表的结果，很明显，纳米颗粒的发光受到几种竞争现象的影响：新的成核中心的形成，纳米颗粒的生长和表面钝化。叠加在上述效应上的是量子限制引起的尺寸相关的发光变化。这项研究有助于我们理解ZnO纳米粒子绿色发射的起源，这对于合理设计无毒生物学应用的荧光探针非常重要。 ZnO纳米颗粒涂有氧化镁层，并引入HeLa癌细胞中。

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