An excellent stable fluorescent probe: Selective and sensitive detection of trace amounts of Hg+2 ions in natural source of water

作者：Singh Ranjana; Rai Sunil Kumar; Tiwari Manish Kumar; Mishra Anurag; Tewari Ashish K; Mishra Phool Chand; Singh Ranjan K

来源：Chemical Physics Letters, 2017, 676: 39-45.

DOI：10.1016/j.cplett.2017.03.046

• Fluorescent probe
• 3-Cyano-4,6-dimethyl-2-pyridone
• Natural river water
• Hg+2 ions
• Stability
• LOD

The fluorescent and stable aqueous solution of 3-Cyano-4,6-dimethyl-2-pyridone (CDPy) has been used as a probe for selective detection of Hg+2 ions in natural river water. The fluorescence intensity of the probe was reduced on adding Hg+2 ions. The DFT and TD-DFT confirmed that the reduction in fluorescence intensity occurred due to excited state charge transfer between the CDPy molecule and Hg+2 ions. This procedure can be used to detect Hg+2 ions up to a detection limit similar to 0.41 mu M. It is reproducible with excellent stability (similar to 10 weeks) and applicable in a wide linear range (3-231 mu M).

• 出版日期2017-5-16
• 单位河北医科大学