@article{10902/34935,
year = {2024},
month = {9},
url = {https://hdl.handle.net/10902/34935},
abstract = {Advancements in the on-surface synthesis of atomically precise graphene nanostructures are propelled by the introduction of innovative precursor designs and reaction types. Until now, the latter has been confined to cross-coupling and cyclization reactions that involve the cleavage of specific atoms or groups. In this article, we elucidate how the migration of phenyl substituents attached to graphene nanoribbons can be harnessed to generate arrays of [18]-annulene pores at the edges of the nanostructures. This sequential pathway is revealed through a comprehensive study employing bond-resolved scanning tunneling microscopy and ab-initio computational techniques. The yield of pore formation is maximized by anchoring the graphene nanoribbons at steps of vicinal surfaces, underscoring the potential of these substrates to guide reaction paths. Our study introduces a new reaction to the on-surface synthesis toolbox along with a sequential route, altogether enabling the extension of this strategy towards the formation of other porous nanostructures.},
organization = {This research was funded by the CERCA Programme/Generalitat de Catalunya and supported by the Spanish Ministry of Economy and Competitiveness,MINECO under Contract No. SEV-2017-0706), Grant Nos. CEX2021-001214-S, PID2022-140845OB-C62, PID2022-140845OB-C63, PID2022-140845OB-C66, PGC2018-096955-B-C43, TED2021-132388BC41 and TED2021-132388B-C42 funded by MCIN/AEI /10.13039/501100011033, PID2022-140827OB-I00 funded by MICIU/AEI/10.13039/501100011033 and by FEDER, the European Union (EU) H2020 program through the FET Open project SPRING (Grant Agreement No. 863098), the FLAG-ERA grant LEGOCHIP (AEI/10.13039/501100011033 Grants No. PCI2019-111890-2 and PCI-111933-2), and Xunta de Galicia (Centro de Investigación de Galicia accreditation 2019-2022, ED431G 2019/03). This study was supported by MCIN with funding from European Union NextGenerationEU (PRTR-C17.I1) and Generalitat de Catalunya. X.D.d.C., F.G., A.S., and A.G.-L. acknowledge the financial support received from the IKUR Strategy under the collaboration agreement between Ikerbasque Foundation and DIPC on behalf of the Department of Education of the Basque Government. C.M. was supported by Grant RYC2019- 028110-I funded by MICIN/AEI/ 10.13039/501100011033 and by “ESF Investing in your future”. M.T. has been supported by Spanish State Research Agency/FSE (ref. BES2017-08078, project ref. SEV-2013-0295-17-2).},
publisher = {Springer Nature},
publisher = {Communications Chemistry, 2024, 7, 219},
title = {On-surface synthesis of porous graphene nanoribbons mediated by phenyl migration},
author = {Moreno Sierra, César and Díaz de Cerio, Xavier and Tenorio, María and Gao, Fei and Vilas Varela, Manuel and Sarasola, Ane and Peña, Diego and Garcia Lekue, Aran and Mugarza, Aitor},
}