Year: 2018
Type: article
Abstract: 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.
Source: Science
Institutions: Consejo Superior de Investigaciones Científicas, Institut Català de Nanociència i Nanotecnologia, Barcelona Institute of Science and Technology, Universidade de Santiago de Compostela, Centro Singular de Investigación en Química Biológica y Materiales Moleculares, Donostia International Physics Center, Ikerbasque, Institució Catalana de Recerca i Estudis Avançats
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: G1034691527, Graphene-based disruptive technologies, G1786597045, G1839241596, G2478339722, G2584064425, G2674871903, G2703974440, ITHACA, G3288897321, G3569573204, G383211744, G3876637791, G3917533415, G420194793, Graphene-based disruptive technologies, G4509593848, G4552111555, G4817651273, G5452741828, G5554424168, G5690041459, G5904149958, G6969271195, G719039020, G7242317592, G7600237745, G985971609
OpenAlex ID: W2796565445