Self-recognition within the crystal lattices of three functionalised macrocycles results in the formation of arrays of remarkably similar hermaphroditic pairs of macrocycles. In the case of two of the macrocycles containing acylhydrazine substituents, a hitherto unknown recognition pattern is found in the interaction of the hydrazine moiety with crown-ether oxygen atoms.
Efficient dopamine transport by a crown phosphonate
作者:Chun Eung Park、Yong-Gyu Jung、Jong-In Hong
DOI:10.1016/s0040-4039(98)00198-1
日期:1998.4
Crown phosphonate 1 as a ditopic receptor-based carrier compound showed efficient dopamine transport through organic liquid membranes. A combination of extraction, transport, H-1 NMR, and mass spectral data strongly suggests that the transport complex in a chloroform phase is about 2:1 mixture of the cyclic, 1:1 complex 6 and 2:1 complex 8. (C) 1998 Elsevier Science Ltd. All rights reserved.
Molecular Ion Fishers as Highly Active and Exceptionally Selective K<sup>+</sup> Transporters
ion-fishing mechanism as an alternative to conventional carrier or channel mechanisms for mediating highly efficient and exceptionally selective transmembrane K+ flux. The molecular framework, underlying the fishing mechanism and comprising a fishing rod, a fishing line and a fishing bait/hook, is simple yet modularly modifiable. This feature enables rapid construction of a series of molecular ion fishers
Combinatorial Evolution of Fast-Conducting Highly Selective K<sup>+</sup>-Channels via Modularly Tunable Directional Assembly of Crown Ethers
作者:Changliang Ren、Jie Shen、Huaqiang Zeng
DOI:10.1021/jacs.7b04335
日期:2017.9.13
of highly efficient K+-selective channels. In our strategy, a highly robust supramolecular H-bonded 1D ensemble was used to order the appended crownethers in such a way that they roughly stack on top of each other to form a channel for facilitated ion transport across the membrane. Among 15 channels that all prefer K+ over Na+ ions, channel molecule 5F8 shows the most pronounced optimum for K+ while