Electrosynthesis,Characterization and Optical Sensing Application of Amino Acid Functionalized Polyfluorene  

作　　者：Hui Zhang Ge Zhang 徐景坤 文阳平 Wan-chuan Ding Jie Zhang Shou-li Ming Shi-jie Zhen 

机构地区：[1]Jiangxi Key Laboratory of Organic Chemistry,Jiangxi Science and Technology Normal University,Nanchang 330013,China [2]Key Laboratory of Applied Chemistry,Jiangxi Agricultural University,Nanchang 330045,China

出　　处：《Chinese Journal of Polymer Science》2016年第2期229-241,共13页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.51203070 and 51303073);Ganpo Outstanding Talents 555 projects(2013);the Jiangxi Provincial Department of Education(Nos.GJJ12595 and GJJ14301);Jiangxi Science&Technology Normal University Innovation Fund of Postgraduates(No.YC2014-X10)

摘　　要：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.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.

关 键 词：Conjugated polymers Polyfluorene derivatives ELECTROPOLYMERIZATION Optical sensors Metal ions. 

分 类 号：O631[理学—高分子化学]