title: A new rhodamine-based colorimetric chemosensor for naked-eye detection of Cu(2+) in aqueous solution.
abstract: A new colorimetric probe 1 based on rhodamine B lactam was developed for naked-eye detection of Cu(2+). The optical feature of 1 for Cu(2+) was investigated by UV-vis absorption spectroscopy. Upon the addition of Cu(2+), the 1 displayed a distinct color change from colorless to pink, which can be directly detected by the naked eye. The stoichiometry of 1 to Cu(2+) complex was found to be 1:1 and the naked-eye detection limit was determined as low as 2 μM. The results suggest that the probe 1 may provide a convenient method for visual detection of Cu(2+) with high sensitivity.
authors.affiliation: Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Department of Chemical and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Faculty of Materials Science & Engineering, Hubei University, Wuhan 430062, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Department of Chemical and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China.
authors.forename: Yuan-Zheng
authors.initials: YZ
authors.lastname: Lv
authors.affiliation: Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Department of Chemical and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China.
authors.forename: Xiao-Huan
authors.initials: XH
authors.lastname: Huang
authors.affiliation: Hubei Key Laboratory of Pollutant Analysis & Reuse Technology, Department of Chemical and Environmental Engineering, Hubei Normal University, Huangshi 435002, PR China. Electronic address: hushengli168@126.com.
authors.forename: Sheng-Li
authors.initials: SL
authors.lastname: Hu
keywords: Colorimetric probe; Cu(2+); Rhodamine B; Spirolactam