TY - JOUR
T1 - Artificial sodium-selective ionic device based on crown-ether crystals with subnanometer pores
AU - Ye, Tingyan
AU - Hou, Gaolei
AU - Li, Wen
AU - Wang, Chaofeng
AU - Yi, Kangyan
AU - Liu, Nannan
AU - Liu, Jian
AU - Huang, Shaoming
AU - Gao, Jun
PY - 2021
Y1 - 2021
N2 - Biological sodium channels ferry sodium ions across the lipid membrane while rejecting potassium ions and other metal ions. Realizing such ion selectivity in an artificial solid-state ionic device will enable new separation technologies but remains highly challenging. In this work, we report an artificial sodium-selective ionic device, built on synthesized porous crown-ether crystals which consist of densely packed 0.26-nm-wide pores. The Na+ selectivity of the artificial sodium-selective ionic device reached 15 against K +, which is comparable to the biological counterpart, 523 against Ca2 +, which is nearly two orders of magnitude higher than the biological one, and 1128 against Mg2 +. The selectivity may arise from the size effect and molecular recognition effect. This work may contribute to the understanding of the structure-performance relationship of ion selective nanopores.
AB - Biological sodium channels ferry sodium ions across the lipid membrane while rejecting potassium ions and other metal ions. Realizing such ion selectivity in an artificial solid-state ionic device will enable new separation technologies but remains highly challenging. In this work, we report an artificial sodium-selective ionic device, built on synthesized porous crown-ether crystals which consist of densely packed 0.26-nm-wide pores. The Na+ selectivity of the artificial sodium-selective ionic device reached 15 against K +, which is comparable to the biological counterpart, 523 against Ca2 +, which is nearly two orders of magnitude higher than the biological one, and 1128 against Mg2 +. The selectivity may arise from the size effect and molecular recognition effect. This work may contribute to the understanding of the structure-performance relationship of ion selective nanopores.
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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85114178695&origin=recordpage
U2 - 10.1038/s41467-021-25597-1
DO - 10.1038/s41467-021-25597-1
M3 - RGC 21 - Publication in refereed journal
C2 - 34471132
SN - 2041-1723
VL - 12
JO - Nature Communications
JF - Nature Communications
M1 - 5231
ER -