Huang He, Li Chunguang, Zhu Shoujun, Wang Hailong, Chen Cailing, Wang Zhaorui, Bai Tianyu, Shi Zhan, Feng Shouhua
State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, and ‡State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University , Changchun, Jilin 130012, People's Republic of China.
Langmuir. 2014 Nov 18;30(45):13542-8. doi: 10.1021/la503969z. Epub 2014 Nov 6.
Nitrogen-doped (N-doped) photoluminescent carbon dots (CDs) were prepared by a one-pot microwave-assisted hydrothermal treatment using histidine as the sole carbon source in the absence of acid, alkali, or metal ions. With a diameter of 2-5 nm, the synthesized CDs had apparent lattice fringes and exhibited an excitation-dependent photoluminescent behavior. The CDs were highly yielded, well-dispersed in aqueous solution, and showed high photostability in the solutions of a wide range of pH and salinity. They were used as probes to identify the presence of Fe(3+) ions with a detection limit of 10 nM. With confirmed nontoxicity, these CDs could enter the cancer cells, indicating a practical potential for cellular imaging and labeling.
通过一锅法微波辅助水热法，以组氨酸作为唯一碳源，在无酸、碱或金属离子的条件下制备了氮掺杂（N掺杂）的光致发光碳点（CDs）。合成的CDs直径为2 - 5nm，具有明显的晶格条纹，并表现出激发依赖性光致发光行为。这些CDs产率高，在水溶液中分散良好，并且在广泛的pH和盐度溶液中表现出高光稳定性。它们被用作探针来识别Fe(3+)离子的存在，检测限为10 nM。经证实无毒，这些CDs可以进入癌细胞，表明其在细胞成像和标记方面具有实际应用潜力。
