Picolyl-armed 1,3-alternate calix[4]areneazacrown ethers
Seung Kim, Jong; Shon, Ok Jae; Sim, Wonbo; Kyu Kim, Sun; Cho, Moon Hwan; Kim, Jin-Gyu; Suh, Il-Hwan; Kim, Dong Won; Seung Kim Jong; Department of Chemistry, Konyang University; Shon Ok Jae; Department of Chemistry, Konyang University; Sim Wonbo; Department of Chemistry, Konyang University; Kyu Kim Sun; Department of Chemistry, Kangwon National University; Cho Moon Hwan; Department of Chemistry, Kangwon National University; Kim Jin-Gyu; Department of Physics, Chungnam National University; Suh Il-Hwan; Department of Physics, Chungnam National University; Kim Dong Won; Department of Chemistry, Chungbuk National University
Журнал:
Journal of the Chemical Society, Perkin Transactions 1
Дата:
2001
Аннотация:
A series of novel 1,3-alternate calix[4]arene-azacrown ethers with 2-picolyl, 3-picolyl, and benzyl groups on the nitrogen atom were synthesized by reaction of 1,3-alternate calix[4]arene-azacrown ether and aryl halide in the presence of triethylamine as base. Based on two-phase extraction, bulk liquid membrane, <sup>1</sup>H NMR, and solid-state studies on this ligandâ metal complexation, 2-picolyl-armed calixazacrown ether showed the highest selectivity for silver ion due to electrostatic interaction through effective three-dimensional encapsulation assisted by the nitrogen atom of the 2-picolyl group. p
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