荧光
检出限
肉眼
化学
光化学
吸收(声学)
水溶液中的金属离子
猝灭(荧光)
荧光寿命成像显微镜
溶解度
颜料
细胞毒性
活体细胞成像
核化学
金属
材料科学
细胞
色谱法
光学
有机化学
生物化学
物理
复合材料
体外
作者
Lijia Yu,Xinli Fan,Zheng‐Fu Han,Chunguang Ding,Yinglin Zhang,Jingguang Fan,Xinjing Tang
标识
DOI:10.1016/j.dyepig.2022.110600
摘要
Herein, a highly selective and sensitive squaraine dye (F-0) for Cu2+ detection was developed. Upon addition of Cu2+, F-0 could greatly decrease absorption peak accompanying with fluorescent quenching about 170 folds. The detection limit can reach as low as 7.2 nmol/L. F-0 showed excellent water solubility and achieved naked eye detection of Cu2+. A paper strip pre-stained with F-0 solution was fabricated and showed color changed from blue to colorless upon addition of Cu2+. F-0 exhibited highly specific to Cu2+ over other metal ions. Furthermore, on the basic of low cell cytotoxicity, F-0 could be utilized to monitor Cu2+ in living cell and mice via fluorescence imaging. These results showed that F-0 has great potential for a more complex applications.
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