The surface-modified zinc oxide quantum dots (ZnO QDs) have broad application prospects in the field of biomedicine because of their good water solubility, dispersibility, and high fluorescence stability. The alkali bases play important roles in controlling the morphology, size distribution, dispersity, and fluorescence intensity of the synthesized ZnO QDs. In this article, ZnO QDs were synthesized to induce hydrolysis–condensation reaction. The influences of alkali bases (LiOH, NaOH, and KOH) and the ratio of n (Zn 2+ ): n (OH − ) on the properties of synthesized ZnO QDs were investigated. The results show that the particle size of the ZnO QDs prepared using LiOH and NaOH as raw materials are smaller than that using KOH. ZnO QDs prepared at the ratio of n (Zn 2+ ): n (LiOH) = 1:1 have the best fluorescence performance and dispersibility.

中文翻译：

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碱对ZnO量子点合成的影响

表面改性的氧化锌量子点（ZnO QDs）具有良好的水溶性，分散性和高荧光稳定性，因此在生物医学领域具有广阔的应用前景。碱碱在控制合成的ZnO QD的形态，尺寸分布，分散性和荧光强度方面起着重要作用。在本文中，合成了ZnO量子点以诱导水解-缩合反应。研究了碱金属（LiOH，NaOH和KOH）以及n（Zn 2+）：n（OH-）的比例对合成ZnO QDs性能的影响。结果表明，以LiOH和NaOH为原料制备的ZnO量子点的粒径小于KOH。以n（Zn 2+）：n（LiOH）= 1：1的比例制备的ZnO QD具有最佳的荧光性能和分散性。