Synthesis and electronic properties of dinucleic octaethylporphyrin (OEP) derivatives spaced with p-phenylene group [OEP-(p-Phen)n-OEP].

The dinucleic octaethylporphyrin (OEP) derivatives described as OEP-(p-Phen)n-OEP (n=1-4) were synthesized, in each of which the porphyrin ring is spaced with p-phenylene group. Their electronic properties were studied, as compared with those of the corresponding dihexylbithiophene (DHBTh) derivatives with head-to-head (HH) and tail-to-tail (TT) orientations. It proves that OEP-(p-Phen)n-OEP possesses an in-between feature of OEP-(HH-DHBTh)n-OEP and OEP-(TT-DHBTh)n-OEP in electronic properties.