Dipodal quinoline-tethered fluorescent probe synthesis and investigation of spectroscopic properties
Küçük Resim Yok
Tarih
2017
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE BV
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Novel quinoline-tethered fluorescent probe was designed and synthesized as multidentate ligand. Their sensing actions were confirmed by UV-Vis absorbance and emission spectroscopic studies in presence of perchlorate salts of Co2+, Li+, Fe2+, K+, Pb2+, Cu2+, Zn2+, Ni2+, Hg2+, Ag+ cations in acetonitrile (1 x 10(-5) M for absorption studies, 1 x 10(-7) M for fluorescence studies). It was found that the dipodal compounds can selectively bind to Cu2+ and Ag+ metal ions with a significant quenching in their emissions. The capture of Cu2+ and Ag+ by the probe resulted in deprotonation of the secondary amine conjugated to the quinoline-tethered probe, so that the electron-donation ability of the 'N' atom would be greatly enhanced and the probe (2) showed blue-shift in emission and exhibited an on-off fluorescent response. The binding study was explored by using fluorescence spectroscopy with Job plot method. (C) 2017 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Dipodal, Fluorescence, Probe, Silver, Copper, Cation
Kaynak
JOURNAL OF MOLECULAR STRUCTURE
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
1145
