Carboline, also known as diazepine, is a heterocyclic compound in which a pyridine ring and an indole pyrrole ring are fused. In the carboline structure, it is divided into α-carboline, β-carboline and γ-carboline according to the position of the pyridine nitrogen atom. The structure of carbolines is similar to that of fluorene compounds, and it has the advantages of high thermal stability, high luminous efficiency, and variable chemical structure. From the chemical structure, carboline replaces two carbon atoms on fluorene with two nitrogen atoms. The substitution of nitrogen atoms makes carbolines have strong electron affinity. The use of carboline derivatives as semiconductor materials can enhance the electron affinity under the spectrum remains unchanged, which is beneficial to the injection of electrons and improves the efficiency of semiconductor devices. In addition, in terms of chemical structure modification, imine connecting two aromatic rings has high activity, is easy to be chemically modified, and can form a derivative with its unique activity and performance. Therefore, carboline-based materials have applications in many fields such as organic electroluminescence and sensitized solar cells.
Figure 1. Structure of β-carboline
Have a question? Get a Free Consultation