Anion responsive TTF-appended calix[4]arenes. Synthesis and study of two different conformers.
Anion responsive TTF-appended calix[4]arenes. Synthesis and study of two different conformers.
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阴离子响应 TTF 附加杯 [4] 芳烃。两种不同构象异构体的合成和研究。
DOI:
10.1021/jo1021713
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发表时间:
2011-02-04
影响因子:
3.6
通讯作者:
Kim, Jong Seung
中科院分区:
文献类型:
--
作者:
Lee, Min Hee;Cao, Qian-Yong;Kim, Sung Kuk;Sessler, Jonathan L.;Kim, Jong Seung
Two new cone- and 1,3-alternate-calix[4]arenes (cone-1 and 1,3-alt-1), bearing four modified TTF (tetrathiafulvalene) substituents on the upper rim, have been synthesized. The binding ability of these two sets of conformers for various anions, including F−, Cl−, Br−, I−, PF6−, ClO4−, HSO4−, CH3COO−, H2PO4−, and HP2O73−, was tested in organic media by monitoring the changes in their UV/vis and 1H NMR spectra as a function of added anion, as well as via cyclovoltammetry (CV) (all anions studied as their respective TBA salts). On the basis of the present findings, we propose that incorporation of four TTF units within an overall calix[4]arene-based recognition framework produces a preorganized receptor system that displays a modest preference for the pyrophosphate (HP2O73−) anion.
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