摘要
A new fluorescent chemodosimeter based on tetrahydro[5]helicene imide was synthesized,and it showed high selectivity and sensitivity toward Hg2＋ 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 Hg2＋ was estimated to be 2.0 × 10-8 mol·L-1.The Hg2＋ promoted deprotection of dithioacetal groups of 1,which induced water-soluble fluorescent chemodosimeter 1 to form a water-insoluble aldehyde precursor.
A new fluorescent chemodosimeter based on tetrahydro[5]helicene imide was synthesized,and it showed high selectivity and sensitivity toward Hg2＋ 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 Hg2＋ was estimated to be 2.0 × 10-8 mol·L-1.The Hg2＋ promoted deprotection of dithioacetal groups of 1,which induced water-soluble fluorescent chemodosimeter 1 to form a water-insoluble aldehyde precursor.
