Doubling the Length of the Longest Pyrene‐Pyrazinoquinoxaline Molecular Nanoribbons

Abstract

Molecular nanoribbons are a class of atomically‐precise nanomaterials for a broad range of applications. An iterative approach that allows doubling the length of the longest pyrene‐pyrazinoquinoxaline molecular nanoribbons is described. The largest nanoribbon obtained through this approach—with a 60 linearly‐fused ring backbone (14.9 nm) and a 324‐atoms core (C 276 N 48 )—shows an extremely high molar absorptivity (values up to 1 198 074 M −1 cm −1 ) that also endows it with a high molar fluorescence brightness (8700 M −1 cm −1 ).