Tetramethoxy-bay-substituted perylene bisimides by copper-mediated cross-coupling

Abstract

CuBr-mediated cross-coupling of 1,6,7,12-tetrabromoperylene-3,4,9,10-tetracarboxylic acid ester or 1,6,7,12-tetrabromoperylene-3,4:9,10-bis(dicarboximide) with sodium methoxide affords the respective tetramethoxy-perylene dye derivatives which are excellent green (λ_em ≈ 555 nm) and red (λ_em ≈ 635 nm) emitters, respectively, with high fluorescence quantum yields (60–70%).