Calixarene-Mediated Liquid-Membrane Transport of Choline Conjugates.
Calixarene-Mediated Liquid-Membrane Transport of Choline Conjugates.
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DOI:
10.1002/ejoc.201400025
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发表时间:
2014-05-01
影响因子:
2.8
通讯作者:
Schramm, Michael P.
中科院分区:
文献类型:
--
作者:
Adhikari, Birendra Babu;Fujii, Ayu;Schramm, Michael P.
关键词:
A series of supramolecular calixarenes efficiently transport distinct molecular species through a liquid membrane when attached to a receptor-complementary choline handle. Calix-[6]arene hexacarboxylic acid was highly effective at transporting different target molecules against a pH gradient. Both carboxylic- and phosphonic-acid-functionalized calix[4]arenes effect transport without requiring a pH or ion gradient. NMR binding studies, two-phase solvent extraction, and three-phase transport experiments reveal the necessary and subtle parameters to effect the transport of molecules attached to a choline “handle”. On the other hand, rescorin[4]arene cavitands, which have similar guest recognition profiles, did not transport guest molecules. These developments reveal new approaches towards attempting synthetic-receptor-mediated selective small-molecule transport in vesicular and cellular systems.
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