Peri‐Alkylated Terrylenes and Ternaphthalenes Building‐Blocks Towards Multi‐Edge Nanographenes**

Abstract

AbstractSince its first synthesis by Clar in 1948, terrylene – a fully connected ternaphthalene oligomer via naphthalene's peri‐positions – has gained special focus within the rylene family, drawing interest for its unique chemical, structural, optoelectronic and single photon emission properties. In this study, we introduce a novel synthetic pathway that enhances the solubility of terrylene derivatives through complete peri‐alkylation, while also facilitating extensions at the bay‐positions. This approach not only broadens the scope of terrylene's chemical versatility but also opens new avenues for developing solution processable novel multi‐edge nanographenes and tailoring electronic energy levels through topological edge structures. Our findings include a comprehensive structural and spectroscopic characterization along with transient absorption spectroscopy and photophysics of both the synthesized peri‐alkylated terrylene and its phenylene‐fused derivative.