化学
菁
荧光
荧光团
检出限
水溶液
生物分子
分析化学(期刊)
光化学
色谱法
物理化学
生物化学
物理
量子力学
作者
Yusuf Alçay,Emre Ozdemir,Mustafa Semih Yildirim,Utku Ertugral,Ozgur Yavuz,Hulya Aribuga,Yılmaz Özkılıç,Nurcan Ş. Tüzün,Ayşe Buse Özdabak Sert,Fatma Nese Kok,İsmail Yılmaz
出处
期刊:Talanta
[Elsevier]
日期:2023-07-01
卷期号:259: 124471-124471
被引量:4
标识
DOI:10.1016/j.talanta.2023.124471
摘要
The objective of the study is, for the first time, to construct a new near infrared (NIR) fluorophore, spectrophotometric, colorimetric, ratiometric, and turn-on probe (CSME) based on chromenylium cyanine platform decorated with methionine biomolecule to provide an efficient solution for critical shortcoming to be encountered for analysis of hazardous Hg2+ in environment and living cell. The CSME structure and its interaction with Hg2+ ion were evaluated by NMR, FTIR, MS, UV-Vis and fluorescence methods as well as Density Functional Theory (DFT) calculations. The none fluorescence CSME having spirolactam ring only interacted with Hg2+ in aqueous solution including competing ions. This interaction caused the fluorescence CSME with opened spirolactam form which exhibited spectral and colorimetric changes in the NIR region. The probe based on UV-Vis and fluorescence techniques respond in 90 s, has wide linear ranges (for UV-Vis: 6.29 × 10-8 - 1.86 × 10-4 M; for fluorescence: 9.49 × 10-9 - 1.13 × 10-5 M), and has a lower Limit of Detection (LOD) value (for fluorescence: 4.93 × 10-9 M, 0.99 ng/mL) than the value predicted by the US Environmental Protection Agency (EPA) organization. Hg2+ analysis was performed in drinking and tap water with low Relative Standard Deviation (RSD) values and high recovery. Smartphone and living cell applications were successfully performed for colorimetric sensing Hg2+ in real samples and 3T3 cells, respectively.
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