Solid phase reaction method for preparation of carbon dots and multi-purpose applications

In this study, carbon dots (CDs) were first obtained by using solid phase reaction method (SPRM). Compared with other methods, SPRM shows remarkable advantages on simple, rapid, and large scale CDs' fabrication without post-treatment and solvent-free. In addition, the obtained CDs can be employed as ideal fluorescent Fe³⁺ probe and fluorescent ink. By taking advantage of its low-cytotoxicity, the CDs can be further applied in cell imaging successfully. This strategy offers a simple and efficient approach for preparing CDs in large-scale and lays a foundation for its further multi-purpose application.