Synthesis and evaluation of extraction ability of calix[4]-crown-6 cone conformer and its oligomeric analogue
Yükleniyor...
Dosyalar
Tarih
2004
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The synthesis of the cone conformers of 5,11,17,23-tetra-tert-butyl-25,27-bis[(4-nitrobenzyloxy)-26,28-dihydroxy]calix[4]-arene (2), 5,11,17,23-tetra-tert-butyl-25,27-bis[(4-nitrobenzyloxy)]calix[4]arene-crown-6 (3) and 5,11,17,23-tetra-tert-butyl-25,27-bis[(4-aminobenzyloxy)]calix[4]arene-crown-6 (4) containing polymerizable side arms, along with their oligomeric analogue 5, is reported. Extraction studies with monomers 3 and 4 and the oligomer 5 show no difference in their extraction behavior and selectivity, whereas, ionophore 2 is a poor extractant for alkali metal cations. These observations suggest that, substitution of side arms on the lower rim of calix moiety can enhance the calix[4]crown-6 cone conformers function to extract alkali metal cations in two phase extraction systems. (C) 2003 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
calixarenes, solvent extraction, alkali metals, calixcrowns, cone conformation
Kaynak
REACTIVE & FUNCTIONAL POLYMERS
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
58
Sayı
1
