Phenanthroimidazole and dicyanovinyl-substituted triphenylamine for the selective detection of CN-: DFT calculations and practically applications
Yükleniyor...
Dosyalar
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE SA
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A novel CN- selective fluorescent turn-on sensor (TPMN) possessing triphenylamine and phenanthroimidazole as signaling units and dicyanovinyl unit for the binding site was designed and synthesized. TPMN exhibited a drastic change in its emission spectra with about 13-fold fluorescence enhancement when treated with CN-, while other tested anions could not arouse the fluorescence enhancement. The experimental and theoretical calculation results showed that this increase in fluorescence intensity of TPMN in presence of CN- is due to the large decrease in the ICT effect by the addition of CN- ion to beta-carbon of the dicyanovinyl moiety. TPMN could selectively detect CN- with a detection limit of 0.23 mu M among the common anions. The CN--binding mode was well-characterized to be 1:1 by using Job's plot with an association constant of 5.36 (logK(a)). Besides, the possible utilization of TPMN was successively tested in water samples and test kits.
Açıklama
Anahtar Kelimeler
Triphenylanime, Phenanthroimidazole, Cyanide, Fluorescent
Kaynak
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
390
Sayı
Künye
Ozdemir, A., Erdemir, S. (2020). Phenanthroimidazole and Dicyanovinyl-Substituted Triphenylamine for the Selective Detection of CN-: DFT Calculations and Practically Applications. Journal of Photochemistry & Photobiology A: Chemistry, 390, 1-6.
