A new chromenylium-cyanine chemosensor for switch-ON near-infrared copper (II) sensing

Karaoglu K.

JOURNAL OF MOLECULAR STRUCTURE, vol.1205, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 1205
  • Publication Date: 2020
  • Doi Number: 10.1016/j.molstruc.2019.127640
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chimica, Compendex, INSPEC
  • Keywords: Near-IR chemosensor, Copper sensing, Chromenylium-cyanine, FLUORESCENT, PROBE, CELLS, IONS, PH
  • Recep Tayyip Erdoğan University Affiliated: Yes


A highly selective and sensitive near-IR chemosensor having a chromenylium-cyanine backbone for the detection of Cu2+ in aqueous samples has been designed and synthesized. The sensor has exhibited linear optical response to copper ions at the range of 0-4.9 x 10(-6) M in the presence of other competing metal ions, such as Na+, K+, Mg2+, Ca2+, Cr3+, Mn2+, Fe3+, Co2+, Ni2+, Zn2+, Al3+, Cd2+, Ag+, Sr2+, Pb2+, Hg2+ and Ba2+. The limit of detection (LOD) was calculated as 1.28 x 10(-8) M which was lower than that of previously reported analogues. The sensor allows detection of the copper(II) ion through the spirocyclic ring-opening reaction by coordination of Cu2+. (C) 2019 Elsevier B.V. All rights reserved.