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- W2896532086 abstract "Abstract Oligo(ethylene oxide)s are known as widely useable yet not very interactive amphiphilic compounds. Here we report that the long amphiphilic oligomers are bound by a polyaromatic capsule in two different manners, depending on the chain length. For instance, the shorter pentamer is crammed into the isolated cavity of the capsule, whereas the longer decamer is threaded into the capsule to form a 1:1 host–guest complex in a pseudo-rotaxane fashion. These unusual bindings occur instantly, spontaneously, and quantitatively even in water at room temperature, with relatively high binding constants ( K a > 10 6 M –1 ). Isothermal titration calorimetry (ITC) studies reveal that enthalpic stabilization is a dominant driving force for both of the complexations through multiple host–guest CH-π and hydrogen-bonding interactions. Furthermore, long oligomers with an average molecular weight of 1000 Da (e.g., 22-mer) are also threaded into the capsules to give pseudo-rotaxane-shaped 2:1 host–guest complexes in water, selectively." @default.
- W2896532086 created "2018-10-26" @default.
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- W2896532086 date "2018-10-12" @default.
- W2896532086 modified "2023-10-12" @default.
- W2896532086 title "Cramming versus threading of long amphiphilic oligomers into a polyaromatic capsule" @default.
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- W2896532086 doi "https://doi.org/10.1038/s41467-018-06458-w" @default.
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