American Chemical Society, Langmuir, 25(18), p. 9654-9658, 2002
DOI: 10.1021/la0256580
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This paper reports a dimethyl sulfoxide (DMSO) phase offered by a coordination polymer gel that consists of metal ions and a calixarene that has multiple binding sites. This metallogel, virtually 98% of which is DMSO, has high stability in aqueous solution over a wide range of pH (1-13), even at 100 °C, rejects ions (almost) completely, and allows nonionic organic molecules spontaneously enriching into it with high efficiency, up to ∼60 times enrichment from aqueous solution and ∼2000 times enrichment from the gas phase.