Introduction of β-Diketone Unit to Polyfluorene Side Chain for Improving Color Stability and Electron Transporting Property

Abstract

Abstract Poly[9,9-bis(2,4-octanedionyl)-9′,9′-di-n-octyl[2,2′-bi-9H-fluorene]-7,7′-diyl] (PFOA) was prepared with a β-diketone structure incorporated in the side chain and the optimal octyl length remained. Compared with poly(9,9-di-n-octylfluorene) (PFO) with a similar degree of polymerization, we found that the introduction of β-diketone brought about superior fluorescent, electrochemical and electron transporting properties, which suggested improved color stability and electron mobility.