In article number 2000680, Siyu Lu, Yupeng Tian, Hong Bi, and co‐workers show that fluorine and nitrogen co‐doped carbon dots with a formation of donor‐π‐acceptor conjugated structure have large multi‐photon absorption cross‐sections and unique up‐conversion property. They show bright deep‐red fluorescence in vitro and in vivo, and can specifically stain the nucleoli of tumor cells.

中文翻译：

---

碳点：在核仁和体内具有大的多光子吸收截面和深红色荧光的UV-Vis-NIR响应式碳点（19/2020年小）

吕思玉，田玉鹏，洪Bi和同事在文章编号2000680中表明，氟和氮共掺杂碳点形成了供体-π-受体共轭结构，具有大的多光子吸收截面，并且具有独特的上转换属性。它们在体外和体内均显示出明亮的深红色荧光，并且可以特异性染色肿瘤细胞的核仁。