Push-pull electronic effects on benzothiazole derived probes for the detection of Zn2+: Exploring the sensing strategies and its applications
文献类型: 外文期刊
作者: Muthusamy, Selvaraj 1 ; Rajalakshmi, Kanagaraj 1 ; Seo, Yeonggil 3 ; Xie, Meng 1 ; Kannan, Palanisamy 2 ; Lodi, Rathna Silviya 4 ; Song, Jong-Won 3 ; Xu, Yuanguo 1 ;
作者机构: 1.Jiangsu Univ, Sch Chem & Chem Engn, Sch Pharm, Zhenjiang 212013, Peoples R China
2.Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Zhejiang, Peoples R China
3.Daegu Univ, Dept Chem Educ, Daegudae Ro 201, Gyongsan 38453, Gyeongsangbug D, South Korea
4.Shandong Acad Agr Sci, Jinan, Peoples R China
关键词: Distinctive electronic effect; Colorimetric-fluorimetric probes; ESIPT-ICT; Real sample analysis; Practical applications
期刊名称:DYES AND PIGMENTS ( 影响因子:5.122; 五年影响因子:4.36 )
ISSN: 0143-7208
年卷期: 2022 年 207 卷
页码:
收录情况: SCI
摘要: The diverse polarity of electron-donating 4-(diethylamino)salicylaldehyde (S-D), and electron-withdrawing 4-nitrosalicylaldehyde (S-W) were conjugated with benzothiazole (BT) to develop BTS-D and BTS-W probes, respectively. The probes exhibited the excited-state intramolecular proton transfer and intramolecular charge transfer sensing mechanisms in detecting Zn2+. BTS-D and BTS-W achieved a quantitative detection of Zn2+ followed by a strong cyan to green in the emission spectra, and from colorless to yellow in the UV-Vis spectra, respectively. The sensing pathways and coordination affinities between the probes and Zn2+ were explored using a series of spectroscopic evaluations, 1H NMR, 1H-1H COSY (2D NMR), HR-MS, XPS and DFT calculations. The probes demonstrated excellent selectivity, good water solubility, and high sensitivity, securing low LOD values: 0.15 mu M for BTS-W in colorimetric analysis and 14 nM for BTS-D in fluorimetric analysis in aqueous media. The advantages of the probes assessed for the detection of Zn2+ in various water samples, Whatman paper-based sensor strips, and PC3 live cells. The findings revealed the encouraging on-site visualization in wastewater systems and bio-contents.
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