Anthradifuran, a Furan Analogue of Pentacene, and Its Isomers, Exhibiting Solid-state Photoluminescence

We have synthesized diphenyl-substituted anthra[2,3-b:6,7-b′]difuran, a furan analogue of pentacene, together with its isomers, anthra[2,1-b:6,5-b′]difuran and anthra[1,2-b:5,6-b′]difuran. These compounds are stable in the solid state with high decomposition temperatures. They are luminescent in the solid state with a quantum yield of 0.093–0.23.