Abstract
In sharp contrast to numerous artificial potassium channels developed over the past decade, the study of artificial lithium-transporting channels has remained limited. We demonstrate here the use of an interesting class of polymers with intrinsic microporosity (PIM) for constructing artificial lithium channels. These PIM-derived lithium channels show exceptionally efficient (γLi+ > 40 pS) and highly selective transport of Li+ ions, with selectivity factors of > 10 against both Na+ and K+. By simply adjusting the initial reaction temperature, we can tune the transport property in a way that PIMs synthesized at initial reaction temperatures of 60 °C and 80°C exhibit improved transport efficiency and selectivity, respectively, in the dioleoyl phosphatidylcholine membrane.
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