Citation: Wei Liu, Ming-liang Sun, Qian Liu, Ben-lin He, Hong-lun Ge, Miao Sun, Qin-jie Zhang, Wei Wang. AN ELECTROCHEMICALLY PREPARED SKY-BLUE LIGHT EMITTING ETHER FUNCTIONALIZED POLYFLUORENE AS CHEMOSENSOR FOR METAL IONS[J]. Chinese Journal of Polymer Science, ;2013, 31(11): 1579-1589. doi: 10.1007/s10118-013-1352-2 shu

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

1.
Institute of Material Science and Engineering, Ocean University of China, Qingdao 266100, China

Received Date: 14 December 2012
Revised Date: 11 March 2013

Fund Project: This work was financially supported by the National Natural Science Foundation of China (Nos. 50903078, 21274134) and New Century Excellent Talents in Universities (No. NCET-11-0473).

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 LiClO4/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 mgmL-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 after 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.
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