Mn, B, N co-doped graphene quantum dots for fluorescence sensing and biological imaging

Arabian Journal of Chemistry

Peyman Servati¹  Zhenzhen Huang²  Jianguo Tang²  Xiao Xiao²  Yanxin Wang³  Yiheng Wang⁴  Bingyang Li⁵  Linjun Huang⁵  Xianhang Yan⁵  Menglei Hu⁶ 

[1] Corresponding authors.;Technology Cooperation, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, PR China;Tsinghua Shenzhen International Graduate School, Shenzhen 518055, PR China;Department of Electrical and Computer Engineering University of British Columbia, Vancouver, BC V6T 1Z4, Canada;;Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science &;Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute &

关键词: Graphene quantum dots;    Fluorescence sensors;    Biological imaging;    High selectivity;   

DOI  :  

来源: DOAJ

【 摘 要 】

The fluorescent and quantum yield (QY) of graphene quantum dots has been improved in recent years by doped atoms, which have good application prospects in fluorescence sensors and biological imaging. Here, a one-step hydrothermal synthesis method was used to synthesize manganese ions bonded with boron and nitrogen-doped graphene quantum dots (Mn-BN-GQDs). Compared with the boron and nitrogen co-doping graphene quantum dots (BN-GQDs), the fluorescence properties and quantum yield of Mn-BN-GQDs are significantly improved. Meanwhile, Mn-BN-GQDs exhibit low toxicity and good fluorescence imaging in living cells and has high selectivity to Fe3+ ions. Therefore, this experiment design Mn-BN-GQDs as a fluorescence sensor to detect Fe3+ ions, providing strong evidence for the advanced high sensitivity, selectivity and wide detection range of the Mn-BN-GQDs as a fluorescence sensor. These results indicate a dual linear relationship with good linear relationships in the 10–100 μM and 100–800 μM ranges, and limit of detection are 0.78 μM and 9.08 μM, respectively. Cellular imaging results demonstrate that Mn-BN-GQDs can be used as fluorescence sensors in biological imaging. Mn-BN-GQDs can be used for fluorescence sensing in biological imaging in combination with low toxicity, QY and quantum dot lifetime.

【 授权许可】

Unknown