Papers by Keyword: Polyfluorene Derivative

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Authors: Shu Ai Li, Shao Wei Wang, Cheng Chao Chu, Xiu Wang, Mei Yan, Jing Hua Yu, Sheng Guang Ge
Abstract: Driven by the urgent demand for novel electrochemiluminescence reagents, a water-soluble polyfluorene derivative, poly [(9,9-bis (3-((N,N-dimethylamino)N-ethy-lammonium) propyl)-2,7-fluorene)-alt-2,7-(9,9-p-divinylbenzene)] dibromide (P-2), was designed and success-fully synthesized. Ultraviolet-visible spectroscopy and fluorescence spectroscopy were used to characterize the formation of P-2, and the results showed that P-2 had strong fluorescence intensity. More importantly, electrochemiluminescence (ECL) of the prepared P-2 was also observed when the applied potential was cycled between 1.0 to 2.8 V at 100 mV·s-1 in phosphate buffered saline buffer solution (pH 8.20). Based on the stable ECL performance, an ECL system for bovine serum albumin (BSA) was constructed. Under the optimal conditions, the enhanced ECL intensity was linearly correlated to the concentration of BSA over the range of 5.0×10-8-1×10-4 g·mL-1 (R=0.9996) with a detection limit of 1.26×10-8 g·mL-1 (n=11). This work not only introduced a substitute for traditional ECL regents, but also proposed a simple ECL system for other analytes.
Authors: Mei Yan, Wei Qiang Gao, Shen Guang Ge, Jia Dong Huang, Jing Hua Yu
Abstract: A Novel Polyfluorene Derivative, Poly[(9,9-Bis(3'-(N,N-Dimethylamino)propyl)-2,7- Fluorene)-Alt-2,7-(9,9- P-Divinylbenzene)] (P-1) Was Synthesized by the Palladium-Catalyzed Suzuki Coupling Reaction and it’s Quaternized Ammonium Polyelectrolyte Derivatives Was Obtained through a Postpolymerization Treatment on the Terminal Amino Groups. the Electrochemical and Optical Properties of the Resulting Copolymers Was Fully Investigated. the Results Showed that the New Polyfluorene Derivative Had Potential Useful in Used as Materials for Electronic Conductivity, Chemical and Biological Sensors that Derive from its Highly Conductive and Strong Fluorescence.
Authors: Mei Yan, Wei Qiang Gao, Shen Guang Ge, Jia Dong Huang, Jing Hua Yu
Abstract: A novel polyfluorene derivative, poly[(9,9-bis(3'-(N,N-dimethylamino)propyl)-2,7- fluorene)-alt-2,7-(9,9- p-divinylbenzene)] (P-1) was synthesized by the palladium-catalyzed Suzuki coupling reaction and it’s quaternized ammonium polyelectrolyte derivatives was obtained through a postpolymerization treatment on the terminal amino groups. The electrochemical and optical properties of the resulting copolymers was fully investigated. The results showed that the new polyfluorene derivative had potential useful in used as materials for electronic conductivity, chemical and biological sensors that derive from its highly conductive and strong fluorescence.
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