Showing papers by "Mingliang Sun published in 2012"
TL;DR: In this article, a series of random low band-gap conjugated copolymers (PFO-DDSTQ) derived from 9,9-dioctylfluorene (DOF) and 6,7-dimethyl-4, 9-di(selenophen-2-yl)-[1,2,5]thiadiazolo[3,4-g]quinoxaline are prepared by the palladium-catalyzed Suzuki coupling reaction.
21 citations
TL;DR: In this article, a polyfluorene (PF) film has been successfully electropolymerized at lower potential (0.91 V vs. Ag/AgCl) in the mixed electrolyte of boron trifluoride diethyl etherate and triffluoroacetic acid.
Abstract: Polyfluorene (PF) film has been successfully electropolymerized at lower potential (0.91 V vs. Ag/AgCl) in the mixed electrolyte of boron trifluoride diethyl etherate and trifluoroacetic acid. The PF film is characterized to have about 10 repeat units and no presence of ketonic defect site. UV-vis and photoluminescent spectral studies indicate that the PF film is blue light emitting. From cyclic voltammetry and galvanostatic charge-discharge tests in 1 M lithium perchlorate/acetonitrile electrolyte, the polyfluorene/activated carbon electrode shows a specific capacitance of 227.1 F g−1 (per active layer mass) and reversible redox reaction at the potential of 1.4 V in a three electrode configuration. An asymmetric electrochemical capacitor based on this composite electrode and activated carbon electrode exhibits a specific energy of 14.7 Wh kg−1 (per active layer mass). These results indicate that electrochemically prepared polyfluorene could be used as energy storage component for electrochemical application.
3 citations