An extended π-electronic conjugation system of dihexylbithiophene–octaethylporphyrin [OEP–(DHBT)n–OEP; n = 1–5], all the chromophores in which are connected with the linkage of 1,3-butadiyne (diacetylene), was synthesized by an oxidative cross-coupling reaction of the corresponding terminal acetylenes. Absorption spectral and electrochemical properties of the OEP–(DHBT)n–OEP system were examined. The results proved that the orientation of two 3-hexylthiophene (3HTh) rings of DHBT plays an important role in electronic communications between the two terminal OEP rings.
二己基联
噻吩-八乙基
卟啉的扩展 π 电子共轭体系 [OEP-(DHBT)n-OEP; n = 1–5],其中所有发色团均与 1,3-
丁二炔(
丁二炔)键连接,通过相应末端
乙炔的氧化交叉偶联反应合成。检查了 OEP-(DHBT)n-OEP 系统的吸收光谱和电
化学性质。结果证明DHBT的两个
3-己基噻吩(3HTh)环的取向在两个末端OEP环之间的电子通信中起着重要作用。