J. Kosco, I. McCulloch
ACS Energy Lett., 3 (11), pp. 2846-2850, (2018)
In recent years, there has been a growing interest in developing organic semiconductors capable of driving photocatalytic hydrogen evolution from water due to their tunable physical properties, stability in aqueous media, and potential for large-scale synthesis from abundantly available precursors. Graphitic carbon nitrides (g-C3N4) are the incumbent class of organic semiconductors for this application.Enhancing the photocatalytic performance of g-C3N4 through structural and chemical modifications, as well as the formation of g-C3N4 composites with both organic and inorganic semiconductors is currently the subject of an intense research effort. However, many new classes of organic semiconductors are also being developed for this application, such as covalent organic frameworks, self-assembled supramolecular gels, N-doped graphene oxide, linear conjugated polymers, and conjugated polymer networks.