An amino acid side chain functionalized polyfluorene derivative poly[N-（9-fluorenylmethoxycarbonyl）-glycine] （P9FG） was facilely electrosynthesized and characterized, and the structure, properties and optical sens...An amino acid side chain functionalized polyfluorene derivative poly[N-（9-fluorenylmethoxycarbonyl）-glycine] （P9FG） was facilely electrosynthesized and characterized, and the structure, properties and optical sensing application of the obtained polymer were described and discussed. The electropolymerization occurred at C2 and C7 positions of fluorene units, and amino acid side chain groups were not cleaved from polyfluorene backbone in mixed electrolytes of boron trifluoride diethyl etherate and dichloromethane. Thermal analysis demonstrated good thermal stability of P9FG. Fluorescent spectra indicated that P9FG was a good blue light emitting material that could be employed as optical sensors. The soluble P9FG as a turn-off fluorescent sensor could realize the detection of Fe^3＋, Cu^2＋ and Cr2O7^2-, respectively. In addition, P9FG as a turn-off ultraviolet sensor could realize the detection of Cu^2＋ while as turn-on ultraviolet sensors could also realize the determination of Fe^3＋ and Cr2072-, respectively. All results indicate that P9FG is a promising candidate for optical sensing.展开更多
基金financially supported by the National Natural Science Foundation of China(Nos.51203070 and 51303073)Ganpo Outstanding Talents 555 projects(2013)+1 种基金the Jiangxi Provincial Department of Education(Nos.GJJ12595 and GJJ14301)Jiangxi Science&Technology Normal University Innovation Fund of Postgraduates(No.YC2014-X10)
文摘An amino acid side chain functionalized polyfluorene derivative poly[N-（9-fluorenylmethoxycarbonyl）-glycine] （P9FG） was facilely electrosynthesized and characterized, and the structure, properties and optical sensing application of the obtained polymer were described and discussed. The electropolymerization occurred at C2 and C7 positions of fluorene units, and amino acid side chain groups were not cleaved from polyfluorene backbone in mixed electrolytes of boron trifluoride diethyl etherate and dichloromethane. Thermal analysis demonstrated good thermal stability of P9FG. Fluorescent spectra indicated that P9FG was a good blue light emitting material that could be employed as optical sensors. The soluble P9FG as a turn-off fluorescent sensor could realize the detection of Fe^3＋, Cu^2＋ and Cr2O7^2-, respectively. In addition, P9FG as a turn-off ultraviolet sensor could realize the detection of Cu^2＋ while as turn-on ultraviolet sensors could also realize the determination of Fe^3＋ and Cr2072-, respectively. All results indicate that P9FG is a promising candidate for optical sensing.
