Journal
NANO LETTERS
Volume 17, Issue 11, Pages 6742-6746Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b02846
Keywords
Molecular transport; multilayer graphene nanopores; enantioselectivity; molecular dynamics simulations
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Funding
- Fundamental Research Funds for the Central Universities [15CX08003A, 14CX0222A, 15CX05049A]
- NSF [DMR-1506886]
- National Basic Research Program of China [2015CB250904]
- National Natural Science Foundation of China [51302321]
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Multilayer superstructures based on stacked layered nanomaterials offer the possibility to design three-dimensional (3D) nanopores with highly specific properties analogous to protein channels. In a layer-by-layer design and stacking, analogous to molecular printing, superstructures with lock-and-key molecular nesting and transport characteristics could be prepared. To examine this possibility, we use molecular dynamics simulations to study electric field-driven transport of ions through stacked porous graphene flakes. First, highly selective, tunable, and correlated passage rates of monovalent atomic ions through these superstructures are observed in dependence on the ion type, nanopore type, and relative position and dynamics of neighboring porous flakes. Next, enantioselective molecular transport of ionized L- and D-leucine is observed in graphene stacks with helical nanopores. The outlined approach provides a general scheme for synthesis of functional 3D superstructures.
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