Selective removal and quantification of Cu(ii) using fluorescent iminocoumarin-functionalized magnetic nanosilica
作者:Hyo Sung Jung、Minsung Park、Ji Hye Han、Jae Hong Lee、Chulhun Kang、Jong Hwa Jung、Jong Seung Kim
DOI:10.1039/c2cc18113d
日期:——
A newly prepared iminocoumarin-functionalized magnetic nanosilica (Ni@SiO2-1) was found to form a selective stable complex with Cu2+ over other metal ions. Quantification of Cu2+ ions in aqueous solution using Ni@SiO2-1 is demonstrated through a fluorescent demetallization ensemble process.
作者:Hyo Sung Jung、Ji Hye Han、Zee Hwan Kim、Chulhun Kang、Jong Seung Kim
DOI:10.1021/ol2018856
日期:2011.10.7
An "ensemble"-based chemodosimeter 1-Cu(II) for cyanide detection is reported. 1-Cu(II) can recognize a cyanide ion over other anionic species to show a marked fluorescence enhancement under aqueous conditions. "Off-on" fluorescence change of 1-Cu(II) is proceeded by addition of cyanide, which induces decomplexation of the Cu(II) ion from nonfluorescent 1 followed by hydrolytic cleavage of the resulted Schiff base to give a strongly fluorescent coumarinaldehyde (2). The selective detection of cyanide with 1-Cu(II) for biological application was also performed in HepG2 cells.