Anion recognition by calix[4]arene-based p-nitrophenyl amides

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• 作者：Karolí ; na Flí ; drov&aacute ; ^a ; Marcela Tkadlecov&aacute ; ^b ; Kamil Lang^c ; Pavel Lhot&aacute ; k^a ; ^{lhotakp@vscht.cz} ; ^{pavel.lhotak@vscht.cz}
• 关键词：Calixarenes ; Anion recognition ; Receptor ; Complexation ; UV/Vis titration
• 刊名：Tetrahedron Letters
• 出版年：2012
• 出版时间：8 February, 2012
• 年：2012
• 卷：53
• 期：6
• 页码：678-680
• 全文大小：317 K

文摘

Calix[4]arene derivatives immobilised in the cone conformation and bearing p-nitrophenyl moieties appended to the upper rim via the amide functions have been synthesised and applied as anion receptors. The ¹H NMR and UV/Vis complexation studies towards selected anions proved that the complexation ability depends considerably on the substitution pattern of the calixarene core. Thus, the proximal diamide derivative has a complexation constant for by one order of magnitude higher than the distal analogue.