Copolymer of Fluorene and Triphenylamine Moieties: Direct and Post-Functionalization Strategy, Structural Characterization, and Chemosensoring Behavior
✍ Scribed by Rong Yang; Weibing Wu; Wenyu Wang; Zhen Li; Jingui Qin
- Book ID
- 102488664
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 415 KB
- Volume
- 211
- Category
- Article
- ISSN
- 1022-1352
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✦ Synopsis
Abstract
To prepare a copolymer of fluorene and triphenylamine bearing imidazole groups in the side chain, two synthetic approaches have been designed: the direct copolymerization of the corresponding monomers, and the post‐functionalization of a precursor polymer. Unexpectedly, the direct copolymeriztion strategy was better. The chemosensing behavior of P2 was carefully studied, the fluorescence of which could be quenched by Cu^2+^ ions at concentrations as low as 8 × 10^−6^ mol · L^−1^ in dilute solutions. By utilizing the much higher stability constant of the complex of CN^−^ and Cu^2+^, the quenched fluorescence of the solution of P2 by Cu^2+^ ions could be recovered upon the addition of a trace amount of CN^−^ anions, with a detection limit as low as 1.8 × 10^−5^ mol · L^−1^ (0.47 ppm), making P2 a new sensitive cyanide probe.
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