Towards free-standing "Graphane"
Free-standing nano-porous semimetallic graphene has been converted into semiconducting "graphane", where each C atom is sp3 bound to a hydrogen atom. With ultra-high-vaccum exposure to atomic H an unprecedented high level of hydrogenation (≈90% of sp3 bonds) is achieved. The semiconducting response and the establishment of sp3 bonds has been brought to light by photoemission spectromicroscopy and confirmed by theoretical predictions. A stable, double-sided fully hydrogenated configuration of graphane is obtained.
Relevant publications:
Maria Grazia Betti, Dario Marchiani, Andrea Tonelli, Marco Sbroscia, Elena Blundo, Marta De Luca, Antonio Polimeni, Riccardo Frisenda, Carlo Mariani, Samuel Jeong, Yoshikazu Ito, Nicola Cavani, Roberto Biagi, Peter N.O. Gillespie, Michael A. Hernandez Bertran, Miki Bonacci, Elisa Molinari, Valentina De Renzi, Deborah Prezzi, Dielectric response and excitations of hydrogenated free-standing graphene, Carbon Trends 12, 100274 (2023)
Maria Grazia Betti, Ernesto Placidi, Elena Blundo, Antonio Polimeni, Marco Sbroscia, José Avila, Pavel Dudin, Kailong Hu, Yoshikazu Ito, Deborah Prezzi, Miki Bonacci, Elisa Molinari, and Carlo Mariani, Gap Opening in Double-Sided Highly Hydrogenated Free-Standing Graphene, Nano Letters 22, 2971-2977 (2022)
Mahmoud Mohamed Saad Abdelnabi, Chiara Izzo, Elena Blundo, Maria Grazia Betti, Marco Sbroscia, Giulia Di Bella, Gianluca Cavoto, Antonio Polimeni, Isabel García-Cortés, Isabel Rucandio, Alejandro Moroño, Kailong Hu, Yoshikazu Ito, and Carlo Mariani, Deuterium Adsorption on Free-Standing Graphene, Nanomaterials 11, 130 (2021)