荧光
检出限
硫黄
纳米化学
碳纤维
甲酰胺
化学
纳米探针
分析化学(期刊)
氮气
热液循环
兴奋剂
光化学
材料科学
光电子学
光学
色谱法
有机化学
复合材料
物理
复合数
作者
Shengyu Chen,Suping Li,Xiaofeng Liu,Bingfang Shi,Yijun Huang,Shulin Zhao
标识
DOI:10.1007/s00604-022-05188-7
摘要
A near-infrared nitrogen and sulfur co-doped carbon dot (N,S-CD)-based ratiometric fluorescent probe is proposed that is synthesized via hydrothermal approach using glutathione and formamide as precursor for sensing and imaging of Zn2+. The prepared N,S-CDs facilitate binding with Zn2+ owing to N and S atom doping. The ratio (I650/I680) of fluorescence intensity at 650 nm and 680 nm increased with the concentrations of Zn2+ when the excitation wavelength was 415 nm. The linearity range was 0.01 to 1.0 μM Zn2+with a detection limit of 5.0 nM Zn2+. The proposed probe was applied to label-free monitoring of Zn2+ in real samples and fluorescent imaging of Zn2+ in living cells, which confirmed its promising applications.
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