Optoelectronic Properties of Polyfluorene Comprising Chemically Bonded Gold Nanoparticles

• Main Authors: Yen-Ching Tu, 涂燕清
• Other Authors: Chien-Chao Tsiang
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/48399163956304767526

碩士 === 國立中正大學 === 化學工程所 === 96 === Abstract The work is to prepare poly(9,9-dioctylfluorene)(PF) with a thiol terminal group(PF-SH)and then bond this functionalized PF to in situ formed gold nanoparticles. The thermal, optical and electrochemical properties of the resulting nanocomposite have been fomed to vary with the conjugation length of the polymer and the amount of gold nanoparticles were discussed. The conjugation length of the polymers varies with the feed ratios during the Suzuki cross-coupling reaction. TGA and DSC analyses results indicate that all copolymers are thermally stable up to 400℃ without observable melting points. The UV-absorption and PL spectra show blue shifts when the conjugation length of polymeric chain is shorter. Moreover, the optoelectronic properties of the PLED devices made of this nanocomposite have been investigated. The threshold voltage of the PLED device is lowered and the brightness and the current efficiency are improved by our introduction of gold nanoparticles into the polymer matrix.