Synthesis and Characterization of a New Semiconductor Oligomer HavingQuinoline and Fluorene Units

Journal of the Brazilian Chemical Society

Fábio C. Correia¹  Thays C. F. Santos¹  Jarem R. Garcia¹  Laura O. Peres¹  Shu H. Wang¹ 

关键词: conjugated material;    fluorene;    quinoline;    Suzuki;    OLEDs;   

DOI  :  10.5935/0103-5053.20140217

来源: SciELO

【 摘 要 】

A new oligomer having fluorenylene and quinolinylene groups was straightforwardlysynthesized by Suzuki reaction and proven to be readily soluble in common organicsolvents. The chemical structure of the copolymer was confirmed and characterized by 1H nuclear magnetic resonance (NMR), Fourier transform infrared (FTIR),differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and gelpermeation chromatography (GPC) measurements. In solution, the oligomer presented twoabsorption maxima at 314 and 245 nm, along with a high fluorescence quantum yield(82%), characterized by an emission maximum at 419 nm. The band gap of the materialwas estimated to be around 2.60 eV by cyclic voltammetry, however the optical bandgap for the thin film observed by UV-Vis spectroscopy was 3.10 eV. The divergence wasattributed to charge transfer interactions due to the presence of donor and acceptorunits in the copolymer.

【 授权许可】

CC BY   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License