Spatially Resolved 2D Laser Writing on Graphene Using Diazonium Salts.

ABSTRACT: We present the first investigation of precise laser-guided patterning, functionalization, defunctionalization, and refunctionalization of single-layer graphene (SLG) with three different aryl diazonium salts. Using scanning Raman microscopy (SRM) we confirmed the spatially resolved nature of the functionalization. We systematically investigated the influence of key laser parameters (power, irradiation time, and wavelength) and the electronic effects of the substituents on both the functionalization efficiency and integrity of graphene. Our solid-phase approach unequivocally demonstrates that laser-triggered covalent attachment can achieve high functionalization levels comparable to solution-based methods. We also unveil a novel laser-induced defunctionalization pathway at high laser powers

SUBMITTER: Kruger J 

PROVIDER: S-EPMC12531459 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature