Effective π-Extension of Carbazole-Based Thiaporphyrins by Peripheral Phenylethynyl Substituents
摘要:
Several tetrakis(phenylethynyl)- and (phenylethynylphenylethynyl)-substituted carbazole-based thiaporphyrins were synthesized. These pi-extended porphyrins display remarkably intensified and red-shifted absorption bands in the NIR region up to 1126 nm due to perturbation by the phenylethynyl substituents.
Effective π-Extension of Carbazole-Based Thiaporphyrins by Peripheral Phenylethynyl Substituents
摘要:
Several tetrakis(phenylethynyl)- and (phenylethynylphenylethynyl)-substituted carbazole-based thiaporphyrins were synthesized. These pi-extended porphyrins display remarkably intensified and red-shifted absorption bands in the NIR region up to 1126 nm due to perturbation by the phenylethynyl substituents.
Synthesis and electronic properties of π-expanded carbazole-based porphyrins
作者:Chihiro Maeda、Yumi Tanaka、Takuma Shirakawa、Tadashi Ema
DOI:10.1039/c9cc05079e
日期:——
Peripheral π-expansion of carbazole-based porphyrins was achieved for the first time by the Pt-catalyzed cyclization and the incorporation of a benzocarbazole unit. These two types of fused porphyrins showed red-shifted and broad NIR absorption due to the expanded π-conjugation as confirmed by NIR absorption spectroscopy and DFT calculations.