A new “on-off-on” fluorescent sensor for cascade recognition of Hg2+ and S2− ion in aqueous medium
作者： Liyan Wang , Ying Tian , Xianyou He , Bing Zhao , Wenhui Ma
DOI: 10.1016/J.JPHOTOCHEM.2018.03.037
关键词:
摘要: Abstract A novel Hg 2+ ion fluorescent sensor 1 has been synthesized based on amide group, showed a highly sensitive and selective response towards over other metal ions by reversibly forming [ -Hg ] complex in 100% aqueous solution. The fluorescence detection limits was 0.41 nM. Job's plots, the MS analysis H NMR titration experiments implied that there only formation of /Hg with 1:1 stoichiometry. Moreover, S 2− can remove from restore spectral signal . This research may enrich field multi-functional chemosensors natural products.
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