Synthesis of Novel Covalent-linked Linear Porphyrin-Thiophene Copolymers

摘要

Linear porphyrin-thiophene copolymers were synthesized by linking 5,15-positions of porphyrin with tetrathiophene or bithiophene moieties for preparing conducting polymer. 2,8,12,18- tetraethyl-3, 7, 13, 17-tetramethyl-5,15-dithienylpoiphyrin 4a (45.1 %), 5,15-di-bithienyl- 2, 8, 12, 18-tetraethyl-3, 7, 13, 17-tetramethylporphyrin 4b (61.2%) and their metal complexes were also reported in high yields (>90%) as the monomers, 5,15-di-bithienylporphyrin and its metal complexes could be polymerized by oxidation using FeCl_3 as oxi-dant. However, 5,15-dithienylporphyrin and its metal complexes can not be polymerized by same reaction. Their polymers were synthesized by electrochemical oxidation on the gold-plate electrode. The structures of copolymers were identified by elemental analysis and IR spectra. And the conductivity of poly 5,15-di-bithienylporphyrin was measured to reach over 1.0 x 10~(-6)S/cm.