Synthesis of a new colorimetric receptor based on calix[4]pyrrole binding oxime for selective recognition of fluoride ions
Küçük Resim Yok
Tarih
2014
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
TAYLOR & FRANCIS LTD
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A colorimetric anion sensor -meso-heptaethylcalix[4]pyrrole-meso-3-aminophenyl-p-nitrobenzaldoxime was synthesised and characterised by various spectroscopic techniques. Anion-binding studies were carried out using UV-vis, and H-1 NMR titrations, revealing that the receptor exhibits selective recognition towards F- over other anions. The selectivity for F- among the halides is attributed mainly to the hydrogen bond interaction of the receptor with F-. Receptor showed colour change from colourless to yellow in the presence of tetrabutylammonium fluoride with 1:2 stoichiometry. Cyclic voltammetry studies, carried out in CH3CN, provided evidence of an anion-dependent electrochemical response with F- ion. This response was particularly dramatic in the case of receptor after the addition of approximate to 1equiv. of F- ion.
Açıklama
Anahtar Kelimeler
calix[4]pyrrole-based receptor, oxime, anion recognition, cyclic voltammetry
Kaynak
SUPRAMOLECULAR CHEMISTRY
WoS Q Değeri
Q2
Scopus Q Değeri
Q3
Cilt
26
Sayı
2
