铜
荧光
生物相容性
检出限
化学
荧光素
选择性
水溶液中的金属离子
金属
吸收(声学)
分析化学(期刊)
纳米技术
光化学
材料科学
色谱法
有机化学
光学
物理
复合材料
催化作用
作者
Yinjuan Bai,Hongpeng Zhang,Bojun Yang,Xiaojing Leng
出处
期刊:Biosensors
[MDPI AG]
日期:2023-02-21
卷期号:13 (3): 301-301
被引量:7
摘要
Copper is a common metallic element that plays an extremely essential role in the physiological activities of living organisms. The slightest change in copper levels in the human body can trigger various diseases. Therefore, it is important to accurately and efficiently monitor copper ion levels in the human body. Recent studies have shown that fluorescent probes have obvious advantages in bioimaging and Cu2+ detection. Therefore, a novel Cu2+ probe (N2) was designed and synthesized from fluorescein, hydrazine hydrate and 5-p-nitrophenylfurfural that is sensitive to and can detect Cu2+ within 100 s. The response mechanism of the N2 probe to Cu2+ was studied by several methods such as Job's plots and MS analysis, which showed that the Cu2+ and the N2 probe were coordinated in a complexation ratio of 1:1. In addition, compared with other cations investigated in this study, the N2 probe showed excellent selectivity and sensitivity to Cu2+, exhibiting distinct fluorescence absorption at 525 nm. Furthermore, in the equivalent range of 0.1-1.5, there is a good linear relationship between Cu2+ concentration and fluorescence intensity, and the detection limit is 0.10 μM. It is worth mentioning that the reversible reaction between the N2 probe and Cu2+, as well as the good biocompatibility shown by the probe in bioimaging, make it a promising candidate for Cu2+ biosensor applications.
科研通智能强力驱动
Strongly Powered by AbleSci AI