title: Dual Fluorescence Response of Newly Synthesized Naphthalene Appended Calix[4]arene Derivative towards Cu2+and I.
abstract: In the present work new naphthalene appended calix[4]arene (NAC4) i.e. 5,11,17,23-tetra-tert-butyl-25,27-di((2-amido(1-naphthlene)ethyl)-26,28-dihydroxy calix[4]arene (6) was designed and successfully synthesized. NAC4 was characterized by1HNMR and FTIR. To explore the complexation behavior and fluorescence response of NAC4, UV-visible and fluorescence studies were carried out with series of metal ions and anions that include solvatochromic effect, ion-ligand response and interference on absorption and fluorescence spectra. Results show that the NAC4 is highly Cu2+and I-selective. The ligand ion interaction follow photoinduced electron transfer (PET) mechanism. The stiochiomatric ratio of ion-ligand was calculated as 1:1 by using Job's plot method and binding constant Kavalues were calculated by using Benesi-Hildebrand equation as 1×103and 8×102M-1with detection limit of 1.05×10-5and 4.0×10-5M for Cu2+and I-respectively. Graphical Abstract ᅟ.
authors: Department of Chemistry, Selcuk University, 42031, Konya, Turkey.|National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
authors: Asif Ali
authors: AA
authors: Bhatti
authors: Department of Chemistry, Selcuk University, 42031, Konya, Turkey.
authors: Mehmet
authors: M
authors: Oguz
authors: National Center of Excellence in Analytical Chemistry, University of Sindh, Jamshoro, 76080, Pakistan.
authors: Shahabuddin
authors: S
authors: Memon
authors: Department of Chemistry, Selcuk University, 42031, Konya, Turkey. myilmaz42@gmail.com.
authors: Mustafa
authors: M
authors: Yilmaz
keywords: Calix[4]arene; Fluorescence; Naphthlene; PET, ion sensor