Synthesis and efficient circularly polarized light emission of an optically active hyperbranched poly(fluorenevinylene) derivativeThis communication is dedicated to Professor Dr Yoshio Okamoto on the occasion of his 70th birthday.Electronic supplementary information (ESI) available: Experimental details including monomer and polymer syntheses, 1H NMR spectra and TGA and DSC charts, and CPL transmission spectra. See DOI: 10.1039/c0cc05564f

An optically active, hyperbranched poly(fluorenevinylene) derivative was synthesized by polymerization of (−)-2,4,7-tris(bromomethyl)-9-neomenthyl-9-pentylfluorene. A spin-coated film sample of the polymer exhibited efficient circularly polarized light (CPL) emission in the visible range of 400–700 nm on photo excitation even without annealing processes leading to chain ordering. [ABSTRACT FROM AUTHOR]