National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization and Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China.
National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization and Tianjin Key Laboratory of Chemical Process Safety, School of Chemical Engineering and Technology, Hebei University of Technology, Guangrong Dao No.8, Hongqiao District, Tianjin 300130, China.
J Colloid Interface Sci. 2020 Feb 15;560:85-90. doi: 10.1016/j.jcis.2019.10.039. Epub 2019 Oct 13.
Mechanical responsive carbon dots (CDs) is a rising star in the family of carbon materials. However, high pressure devices are essential for observing mechanical responses of carbon dots, but they limit the widespread application of mechanical responsive CDs. Two kinds of CDs were prepared using pyrene derivative (pyrene-1-butyric acid, PyBA) as carbon source, and had fluorescence enhancement via simply grinding. An apparent 20-30 times emission enhancement can be observed after the treatment of grinding because of CDs packed structure and morphology changes. To the best of our knownledge, it is the first example of mechanical responsive CDs with fluorescence enhancement without the stimulation of any complex pressure instrumentation. This simple approach could be extended to other carbon sources with π-conjugated structure for building new intelligentized CDs, and provide new routes for the applications of CDs toward mechanical sensing.
机械响应碳点（CDs）是碳材料家族中的后起之秀。然而，观察碳点的机械响应需要高压设备，这限制了机械响应 CDs 的广泛应用。我们使用芘衍生物（芘-1-丁酸，PyBA）作为碳源制备了两种 CDs，通过简单的研磨即可实现荧光增强。研磨处理后，由于 CDs 的堆积结构和形态发生变化，发射强度明显增强 20-30 倍。据我们所知，这是首例无需任何复杂压力仪器刺激即可实现荧光增强的机械响应 CDs。这种简单的方法可以扩展到具有π共轭结构的其他碳源，用于构建新型智能化 CDs，为 CDs 在机械传感方面的应用提供新途径。
