Chen Dechao, Usman Zia Muhammad, Alharbi Thaar M D, Harmer Jeffrey R, Raston Colin L, Li Qin
Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan, QLD, 4111, Australia.
School of Engineering and Built Environment, Griffith University, Brisbane, QLD, 4111, Australia.
ChemSusChem. 2025 May 19;18(10):e202402182. doi: 10.1002/cssc.202402182. Epub 2025 Jan 23.
Carbon dots (CDs) as a new class of photoluminescent zero-dimension carbon nanoparticles have attracted significant research interests owing to their extraordinary opto-electro-properties and biocompatibility. So far, almost all syntheses of CDs require either heat treatment or exertion of high energy fields. Herein, a scalable room-temperature vortex fluidic method is introduced to the CDs synthesis using the angled vortex fluidic device (VFD). By judicious selection of the solvent, typical CDs precursor of phenylenediamine has been converted into high crystalline CDs through VFD processing. The VFD-synthesized CDs cover the full color spectrum from blue to red with the highest quantum yield of 45.6 %. The synthesis shows that the dynamic thin liquid film generated by VFD spun at high rotational speed (7-9 k RPM) is able to induce cycloaddition reactions. The new method for CD synthesis is facile, occurring under ambient conditions in the VFD, potentially offering industrial scaling up of production of full color carbon dots.
碳点（CDs）作为一类新型的光致发光零维碳纳米颗粒，因其非凡的光电特性和生物相容性而引起了广泛的研究兴趣。到目前为止，几乎所有碳点的合成都需要热处理或施加高能场。在此，我们引入一种可扩展的室温涡旋流体法，利用倾斜涡旋流体装置（VFD）来合成碳点。通过明智地选择溶剂，典型的碳点前驱体苯二胺已通过VFD处理转化为高结晶度的碳点。VFD合成的碳点覆盖了从蓝色到红色的全光谱，最高量子产率为45.6%。该合成表明，以高转速（7-9 k RPM）旋转的VFD产生的动态薄液膜能够引发环加成反应。这种合成碳点的新方法简便易行，在VFD的环境条件下即可发生，有可能实现全色碳点生产的工业规模扩大。
