AN ELECTROCHEMICALLY PREPARED SKY-BLUE LIGHT EMITTING ETHER FUNCTIONALIZED POLYFLUORENE AS CHEMOSENSOR FOR METAL IONS

• Published in: Chinese journal of polymer science 2013-11, Vol.31 (11), p.1579-1589
• Main Authors: Liu, Wei, Sun, Ming-liang, Liu, Qian, He, Ben-lin, Ge, Hong-lun, Sun, Miao, Zhang, Qin-jie, Wang, Wei
• Format: Article
• Language: English
• Subjects: Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Condensed Matter Physics; Industrial Chemistry/Chemical Engineering; Polymer Sciences; 化学传感器; 电化学制备; 电化学聚合反应; 电化学行为; 聚芴; 蓝色发光; 醚化物; 金属离子
• ISSN: 0256-7679; 1439-6203
• DOI: 10.1007/s10118-013-1352-2

Synthesis and electrochemical polymerization of 9,9-bis（2-（2-（2-methoxy ethoxy）ethoxy）ethyl）-fluorene （EO-F） into poly[9,9-bis（2-（2-（2-methoxy ethoxy）ethoxy）ethyl）-fluorene] （EO-PF） films are reported. The boron trifluoride diethyl etherate electrolyte enables facile preparation of EO-PF films at lower potential compared to LiCIOa/MeCN and the electrochemical polymerizations are discussed. The EO-PF shows good electrochemical behavior and can be dissolved in solvents such as DMSO and THF. The solubility of EO-PF in THF is 2 mg.mL-1 and the number average molecular weight is 35300 with a polydispersity index of 1.65. The side chains on C9 position of the monomer maintain unchanged aRer electrooxidation into corresponding polymer. The EO-PF dissolved in THF under 365 nm ultraviolet light is sky blue light emitting with the Commission Internationale de L＇Eclairage-CIE coordinates of （0.19, 0.15）. The electropolymerized EO-PF is used for the first time in chemosensing metal ions, demonstrating fluorescence quenching for Mn2＋ and Fe3＋ while fluorescence enhancement for Cr6＋ ions.