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《工程(英文)》 >> 2017年 第3卷 第3期 doi: 10.1016/J.ENG.2017.03.014

荧光碳点的快速宏量制备及多功能应用

a Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China
b Center of Advanced Science and Engineering for Carbon (Case4Carbon), Department of Macromolecular Science and Engineering, Case School of Engineering, Case Western Reserve University, Cleveland, OH 44106, USA
c SCNU-ZJU Joint Research Center of Photonics, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
d Department of Chemical Engineering, Curtin University, Perth, WA 6845, Australia

收稿日期: 2017-03-27 修回日期: 2017-04-13 录用日期: 2017-04-19 发布日期: 2017-05-17

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摘要

荧光纳米材料在化学传感、生物成像及光电器件等领域具有重要应用前景,其合成方法的研究得到广泛关注。我们采用柠檬酸和乙二胺作为原料,在150 ℃、常压的相对温和条件下,通过“一锅法”反应制备了氮掺杂荧光碳点。所得荧光碳点光学带隙为3.4 eV,在单光子或双光子激发下呈现出明亮的荧光,且荧光发射波长稳定(λ = 450 nm)。基于荧光碳点低细胞毒性和长荧光寿命的优势,实现了荧光碳点作为离体肿瘤细胞(HeLa 细胞) 标记和荧光寿命成像探针的应用,获得了高对比度的荧光寿命成像结果。通过将所得荧光碳点与普通油墨混合制备均匀分散的荧光墨水,可用于普通纸张及其他基材( 如柔性塑料薄膜、纺织品、衣服) 的荧光图案化,为固态荧光传感、荧光防伪标记和可穿戴光电子设备应用研究提供了基础。

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