We report on the one-step synthesis of luminescent carbon nanodots (C-dots) via an electrical discharge between two graphite electrodes submerged into organic solvent (octane). This is a simple approach for the fabrication of C-dots with tunable photoluminescence (PL) that differs from the other preparation methods, as no post-passivation step is required. The synthesized carbon nanoparticles are of spherical shape and their size is distributed in the range of 2–5 nm and exhibit luminescence sensitive to excitation wavelength.

中文翻译：

---

通过在辛烷中放电合成具有可调发光特性的碳纳米点

我们报告了通过浸没在有机溶剂（辛烷）中的两个石墨电极之间的放电来一步法合成发光碳纳米点（C点）的方法。这是一种用于制造具有可调光致发光（PL）的C点的简单方法，该方法不同于其他制备方法，因为不需要后钝化步骤。合成的碳纳米颗粒为球形，其大小分布在2–5 nm范围内，并显示对激发波长敏感的发光。