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
                                
                                    
                                        作者:Naoto Hayashi、Miho Murayama、Kazumine Mori、Akihito Matsuda、Emiko Chikamatsu、Keita Tani、Keiko Miyabayashi、Mikio Miyake、Hiroyuki Higuchi                                    
                                    
                                        DOI:10.1016/j.tet.2004.04.064
                                    
                                    
                                        日期:2004.7
                                    
                                    The palladium complexes of highly extended pi-electronic conjugation system, octaethyl porphyrin (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. (C) 2004 Elsevier Ltd. All rights reserved.