Synthesis and photoelectric study of 6, 13-dibenzylpentacene

6, 13-Dibenzylpentacene was first synthesized. The introduction of benzyl group largely improved the solubility. At the visible region, its maximum absorption in CHCl3 was found at 604.5 nm. The fluorescence spectrum shows that its emitting peak is at 624 nm. Cyclic voltammetry gave its forbidden-band gap of 2.02 eV. Photooxidation test showed that 6, 13-dibenzylpentacene in CHCl3 is sensitive to ambient light, but sluggish to oxygen. Noticeably, 6, 13-dibenzylpentacene is stable in solid state.