Novel Anthracene-Appended Calix[4]triazacrown-5 as an Effective Fluorescence Probe for Co 2+ and Hazardous Cr 2 O 7 2- Ions.

Autor: Sayin S; Department of Environmental Engineering, Giresun University, Giresun, Turkey.
Jazyk: angličtina
Zdroj: Luminescence : the journal of biological and chemical luminescence [Luminescence] 2024 Oct; Vol. 39 (10), pp. e4920.
DOI: 10.1002/bio.4920
Abstrakt: A new calix[4]triazacrown-5-derived fluorescence chemosensor (AntUr-AzClx) at cone conformation was synthesized to afford an effective fluorescent probe, which enables an enhancement in the fluorescence intensity specifically in the presence of Co 2+ metal ions as well as a turnoff response for hazardous dichromate anions. 1 H-NMR, 13 C-NMR, ESI-MS, and elemental analysis techniques were used to characterize the structure of the anthracene-appended calix[4]triazacrown-5 (AntUr-AzClx). The metal ion-binding ability of AntUr-AzClx was evaluated against Co 2+ , Ba 2+ , Ni 2+ , Pb 2+ , and Zn 2+ ions. On the basis of various metal ion recognition phenomena, AntUr-AzClx exhibited outstanding selectivity for only the Co 2+ ion among other metal ions. Also, the calix[4]triazacrown-5-derived fluorescence chemosensor showed high sensitivity towards the Co 2+ ion with a very low limit of detection (LOD) 0.142 μmol L -1 . In addition, anion binding abilities of AntUr-AzClx against various anions such Cr 2 O 7 2- , HCO 3 - , CO 3 2- , NO 3 - , SO 3 2- , SO 4 2- , N 3 - , F - , and I - demonstrated that AntUr-AzClx enables selective and highly sensitive detection of the Cr 2 O 7 2- anion with an excellent LOD of 4.182 nmol L -1 in DMF/PBS (1/1, v/v; pH: 7.05). Furthermore, the calix[4]triazacrown-5-derived fluorescence chemosensor displayed a significant sensing behavior to detect the presence of dichromate anions even in real samples.
(© 2024 John Wiley & Sons Ltd.)
Databáze: MEDLINE
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