A New Fluorescent Chemodosimeter for Hg2+ with High Selectivity and Sensitivity in Water. Issue 5 (24th October 2016)

• Record Type: Journal Article
• Authors: Yang, Dengchen; Li, Meng; Chen, Chuanfeng
• Is Part Of: Chinese journal of chemistry. Volume 35:Issue 5(2017)
• Page Start: 635
• Page End: 639
• Publication Date: 2016-10-24
• Subjects: fluorescence -- chemodosimeter -- Hg2+ ion -- helicene -- water; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cjoc.201600519
• Languages: English
• ISSNs: 1001-604X

Abstract

Abstract : A new fluorescent chemodosimeter based on tetrahydro[5]helicene imide was synthesized, and it showed high selectivity and sensitivity toward Hg 2+ ions over other different tested metal ions in water. The response time was within 0.5 min, and the detection limit of the chemodosimeter for Hg 2+ was estimated to be 2.0 × 10 −8 molL −1 . The Hg 2+ promoted deprotection of dithioacetal groups of1, which induced water‐soluble fluorescent chemodosimeter1 to form a water‐insoluble aldehyde precursor. Abstract : A new fluorescent chemodosimeter1 based on tetrahydro[5]helicene imide was synthesized, and it showed high selectivity and sensitivity toward Hg 2+ in water. The response time was within 0.5 min, and the detection limit of1 for Hg 2+ was 2.0 × 10 −8 molL −1 . Moreover, the response mechanism that Hg 2+ promoted deprotection of dithioacetal groups of1 to form its water‐insoluble aldehyde precursor was also proposed.