Gerein K, Cress B, Maultzsch J, Hirsch A, Hauke F (2027)
Publication Type: Journal article
Publication year: 2027
Book Volume: 262
Article Number: 122119
DOI: 10.1016/j.carbon.2026.122119
Covalent two-dimensional (2D) patterning of graphene allows for local tuning of its electronic and chemical properties while preserving the exceptional intrinsic characteristics of non-modified regions. However, most established approaches rely on multistep procedures and solid-phase reagent coatings, which limit flexibility, scalability, and the attainable degree of functionalization. Here, we establish a λ3-iodane-based solution-phase laser ‘writing’ (SPLW) strategy for covalent graphene patterning that exploits continuous precursor supply at the graphene surface to access high-density functionalization beyond the range attainable with the corresponding film-based approach. The degree of modification can be precisely tuned via irradiation parameters and reaction conditions, enabling graphene to be driven continuously across a broad range of covalent functionalization. Across this range, the Raman response associated with covalent sp2-to-sp3 rehybridization evolves non-monotonically, first increasing and subsequently decreasing as the density of covalently bound addends increases. Temperature-dependent Raman spectroscopy traces this evolution in reverse during thermal addend detachment and further reveals structural limits associated with extensive functional group attachment.
APA:
Gerein, K., Cress, B., Maultzsch, J., Hirsch, A., & Hauke, F. (2027). λ3-iodane-based solution-phase laser writing for tunable and high-density covalent patterning of graphene. Carbon, 262. https://doi.org/10.1016/j.carbon.2026.122119
MLA:
Gerein, Kevin, et al. "λ3-iodane-based solution-phase laser writing for tunable and high-density covalent patterning of graphene." Carbon 262 (2027).
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