Preparation of Silicon–Carbon-Based Dots@Dopamine and Its Application in Intracellular Ag+ Detection and Cell Imaging

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• 作者：Yuliang Jiang ; Zhaoyin Wang ; Zhihui Dai
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：February 17, 2016
• 年：2016
• 卷：8
• 期：6
• 页码：3644-3650
• 全文大小：484K
• ISSN：1944-8252

文摘

A novel nanocomposite, silicon–carbon-based dots@dopamine (Si-CDs@DA) was prepared using (3-aminopropyl) triethoxysilane, glycerol, and dopamine as raw materials via a rapid microwave-assisted irradiation. This type of Si-CDs@DA exhibited ultrabright fluorescence emission (quantum yield of 12.4%) and could response to Ag⁺ selectively and sensitively. Moreover, the obtained Si-CDs@DA can be further applied in sensing intracellular Ag⁺ and cell imaging, because of its photostability, salt stability, and low cytotoxicity. This study provides a simple and efficient approach for preparing novel Ag⁺ fluorescent probes, which could expand the application of carbon nanomaterials in designing related biosensors.