ArticleNature communications2026
Ultrathin crown ether-based polyamide membrane for ion-ion separations.
Article in Nature communications, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors.
Funding
Abstract
Membrane-based liquid separations that selectively extract valuable ionic species from water can enhance resource circularity across industries. However, commercial membranes lack the selectivity required to target specific ions. Here we design crown-ether-based polymeric membranes for ion-ion separations using principles inspired by biological ion channels. Ultrathin membranes (~6 nm) are fabricated via interfacial polymerization of crosslinked 18-crown-6 units. The membranes preferentially sorb and transport potassium, which forms the most stable complexes with the crown ether motifs. Sorption experiments show strong potassium preference in mixed-salt environments, where competitive interactions increase selectivity. Transport measurements demonstrate selective permeation of potassium over competing monovalent and divalent cations, with selectivities of ~4 over cesium and lithium. The combination of ultrathin architecture, high crosslinking degree, and high binding-site density enables this behavior. This work establishes interfacial polymerization as a strategy to incorporate macrocycles into membranes for precise ion separation.
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.