Novel diethynylcarbazole macrocycles: synthesis and optoelectronic properties.
Diethynylcarbazole macrocycles 1b and 2b have been synthesized by oxidative coupling of appropriate precursors. In particular, macrocycle 2b was prepared by bimolecular Pd-catalyzed oxidative coupling in 35% isolated yield. The spectroscopic properties of these macrocycles and their precursors were measured in detail. The films of these macrocycles by the dipping method and the Langmuir-Blodgett technique were fabricated to study their photoinduced charge-transfer properties. A rapid and steady cathodic photocurrent of these films was produced in a three-electrode cell when irradiated with white light. A possible mechanism of the photoinduced electron-transfer pathway was suggested.
Zhao
Tianyue
T
Beijing National Laboratory for Molecular Science, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, and Graduate School of Chinese Academy of Sciences, Beijing 100080, PRC.
Liu
Zhanxiang
Z
Song
Yabin
Y
Xu
Wei
W
Zhang
Deqing
D
Zhu
Daoben
D