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UV-Vis spectral property of a multi-hydroxyl Schiff-base derivative and its colorimetric response to some special metal ions

yanzhengquan 添加于 2018/6/17 20:40:21  2852次阅读 | 0次推荐 | 0个评论

A multi-hydroxyl Schiff-base derivative, N-2′-hydroxyl-1′-naphthyl methylene-2-amino phenol (HNMAP), was synthesized and characterizedby FTIR, 1H NMR and UV–vis spectroscopy. Itwas noted to find therewas great effect for solvent and pH on the UV–vis spectroscopy of HNMAP. Especially, some metal ions could make its UV–vis spectra changed regularly with different time-resolved effects. For example, a real-time and multi-wavelength response to Fe2+ at 520 nm, 466 nm and 447 nm and a quite slow one about 26 min to Fe3+ at 447 nm and 466 nm, respectively. Under the optimized conditions, the changes in the corresponding absorption intensities at abovewavelengthswere in proportion to cFe 2+ or cFe 3+ during respectively partitioned linear ranges,which realized to quantitatively detect Fe2+ or Fe3+ with a large linear range more than two orders of magnitude. A 1:1 complex mode for HNMAP-Fe2+ and 1:2 for HNMAP-Fe3+ were proposed from UV–vis spectral titration and Job's plot. HNMAP would be a potential sensor for colorimetric detection of Fe2+ and Fe3+ in practice.

作 者:Lin Xing, Xiaoyu Zheng, Wenyu Sun, Hua Yuan, Lei Hu*, Zhengquan Yan*
期刊名称: Spectrochimica Acta A
期卷页: 2018 第203卷 第期 455-460页
学科领域:化学科学 » 分析化学 » 光谱分析
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原文链接:https://www.sciencedirect.com/science/article/pii/S1386142518305493?via%3Dihub
DOI: https://doi.org/10.1016/j.saa.2018.06.015
ISBN:
关键词: Multi-hydroxyl Schiff-base, UV–vis spectrum, Time-resolved colorimetric response, Metal ion
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