Highly sensitive and selective "turn-on" fluorescent chemodosimeter for Cu2+ in water via Cu2+-promoted hydrolysis of lactone moiety in coumarin.
A nonfluorescent coumarin derivative (1) was synthesized as an efficient "turn-on" fluorescent chemodosimeter for Cu(2+) in water. Mechanism studies suggested that 1 formed a complex with Cu(2+) in a 1:2 metal-to-ligand ratio, and a 50-fold fluorescence enhancement was observed when the complex simultaneously underwent Cu(2+)-promoted hydrolysis at ambient temperature.
Li
Na
N
Department of Chemistry, Tsinghua University, Beijing 100084, PR China.
Xiang
Yu
Y
Tong
Aijun
A
D003300:Copper / Q000737:chemistry*; D003374:Coumarins / Q000138:chemical synthesis* / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D006868:Hydrolysis; D007783:Lactones / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D014867:Water / Q000737:chemistry*
D003374:Coumarins; D005456:Fluorescent Dyes; D007783:Lactones; D009942:Organometallic Compounds; D014867:Water; D003300:Copper; C030123:coumarin