Bottom-up synthesis of multifunctional nanoporous graphene

graphene; bottom-up; nanomembrane; nanopores; ullmann; ullmann coupling; Cyclodehydrogenation; polymers; nanoribbons; field-effect transistor; scanning tunneling microscopy; density functional theory; ultra-high vacuum; surface science; nanotechnology; 2d materials

Abstract :

[en] Nanosize pores can turn semimetallic graphene into a semiconductor and, from being impermeable, into the most efficient molecular-sieve membrane. However, scaling the pores down to the nanometer, while fulfilling the tight structural constraints imposed by applications, represents an enormous challenge for present top-down strategies. Here we report a bottom-up method to synthesize nanoporous graphene comprising an ordered array of pores separated by ribbons, which can be tuned down to the 1-nanometer range. The size, density, morphology, and chemical composition of the pores are defined with atomic precision by the design of the molecular precursors. Our electronic characterization further reveals a highly anisotropic electronic structure, where orthogonal one-dimensional electronic bands with an energy gap of ∼1 electron volt coexist with confined pore states, making the nanoporous graphene a highly versatile semiconductor for simultaneous sieving and electrical sensing of molecular species.

Disciplines :

Physics

Author, co-author :

Moreno, C.

Vilas-Varela, M.

Kretz, B.

Garcia-Lekue, A.

Costache, M.V.

Paradinas, M.

PANIGHEL, Mirco ; Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Barcelona 08193, Spain

Ceballos, G.

Valenzuela, S.O.

Peña, D.

Mugarza, A.

External co-authors :

yes

Language :

English

Title :

Bottom-up synthesis of multifunctional nanoporous graphene

Publication date :

2018

Journal title :

Science

ISSN :

0193-4511

Volume :

360

Issue :

6385

Pages :

199 - 203

Peer reviewed :

Peer reviewed

Additional URL :

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85045237944&doi=10.1126%2fscience.aar2009&partnerID=40&md5=9227a2654537f946dbe0ff709767c4da

Funding text :

This research was funded by the Centres de Recerca de Catalunya Programme–Generalitat de Catalunya, the Xunta de Galicia (Centro singular de investigacion de Galicia accreditation 2016–2019, ED431G/09), and the European Regional Development Fund. This research was supported by the Spanish Ministry of Economy and Competitiveness (under contract no. MAT2016-78293-C6-2-R, MAT2016-78293-C6-3-R, MAT2016-78293-C6-4-R, and MAT2016-75952-R and Severo Ochoa no. SEV-2013-0295); the Secretariat for Universities and Research, Knowledge Department of the Generalitat de Catalunya 2014 SGR 715, 2014 SGR 56, and 2017 SGR 827; the Basque Department of Education (contract no. PI-2016-1-0027); and the European Union’s Horizon 2020 research and innovation program under grant agreement 696656. C.M. was supported by the Agency for Management of University and Research grants (AGAUR) of the Catalan government through the FP7 framework program of the European Commission under Marie Curie COFUND action 600385.

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