Synthesis and structural and electronic properties of the octaethylporphyrin-dihexylbithiophene-fullerene derivatives (OEP-DHBTh-C60) connected with diacetylene linkage

Orientational isomers of the octaethylporphyrin-dihexylbithiophene-fullerene derivative (OEP-DHBTh-C₆₀) connected with the diacetylene linkage were synthesized. The electronic and electrochemical properties were studied, proving that the orientation of DHBTh affects not only the electronic structures of OEP-DHBTh-C₆₀ but also their molecular motional behaviors evidently.     

Syntheses and electronic properties of the nickel and palladium complexes of the octaethylporphyrin(M1)-(dihexylbithiophene)n-octaethylporphyrin(M2) system [OEP(M1)-(DHBTh)n-OEP(M2)] connected with the diacetylene linkage. A methodology for molecular design of the particular electronic structure

The palladium complexes of highly extended π-electronic conjugation system, octaethylporphyrin(Pd)-(dihexylbithiophene)_n-octaethylporphyrin(Pd) [OEP(Pd)-(DHBTh)_n-OEP(Pd), n=1-6], were synthesized, in which all the chromophores are connected with diacetylene linkage. The unsymmetrical derivatives of OEP(Ni)-DHBTh-OEP(Pd) were also successfully synthesized. Electronic properties of these symmetrical and unsymmetrical complexes were conclusively described, as compared with those of OEP(Ni)-(DHBTh)_n-OEP(Ni). Based on the structure elements, a methodical guiding principle for molecular design of the particular electronic structure will be proposed.