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首页> 外文期刊>Chemistry: A European journal >Synthesis of Fluorinated and Nonfluorinated Graphene Quantum Dots through a New Top-Down Strategy for Long-Time Cellular Imaging
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Synthesis of Fluorinated and Nonfluorinated Graphene Quantum Dots through a New Top-Down Strategy for Long-Time Cellular Imaging

机译：通过新的自上而下的长期细胞成像策略合成氟化和非氟化石墨烯量子点。

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Herein, a new strategy has been developed through combining a microwave-assisted technique with hydrothermal treatment to reduce graphene waste and improve production yield of graphene quantum dots (GQDs) prepared by top-down methods. By using fluorinated graphene oxide (FGO) as a raw material, fluorinated GQDs and nonfluorinated GQDs can be synthesized. Additionally, in the fluorinated GQDs, the protective shell supplied by fluorine improves the pH stability of photoluminescence and the strong electron-withdrawing group, F, reduces the - electron density of the aromatic structure; thus inhibiting reactivity toward singlet oxygen produced during irradiation and improving the photostability. Therefore, the as-prepared fluorinated GQDs with excellent photo- and pH stability are suitable for long-term cellular imaging.
机译：在本文中，已经通过将微波辅助技术与水热处理相结合来开发新策略，以减少石墨烯浪费并提高通过自上而下方法制备的石墨烯量子点（GQD）的产率。通过使用氟化石墨烯（FGO）作为原料，可以合成氟化GQD和非氟化GQD。此外，在氟化GQD中，由氟提供的保护壳提高了光致发光的pH稳定性，而强吸电子基团F降低了芳族结构的-电子密度;因此，抑制了对照射过程中产生的单线态氧的反应性并提高了光稳定性。因此，所制备的具有良好的光和pH稳定性的氟化GQD适合长期细胞成像。

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