Turn-on fluorescent chemosensor for determination of lutetium ion

• Published in: Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Vol. 137; pp. 1231 - 1234
• Main Authors: Faridbod, F., Sedaghat, M., Hosseini, M., Ganjali, M.R., Khoobi, M., Shafiee, A., Norouzi, P.
• Format: Journal Article
• Language: English
• Published: England Elsevier B.V 25.02.2015
• Subjects: Cations - analysis; Chemosensor; Enhancement; Fluorescence; Fluorescent Dyes - chemistry; Limit of Detection; Lutetium; Lutetium - analysis; Pyridines - chemistry; Spectrometry, Fluorescence; Water - analysis; Chemosensor; Fluorescence; Lutetium; Enhancement
• ISSN: 1386-1425; 1873-3557
• DOI: 10.1016/j.saa.2014.08.024

[Display omitted] •An enhanced fluorescent chemosensor is introduced for detection of Lu3+ ion.•The probe exhibits high selectivity toward Lu3+ in comparison with common metal ions.•The limit of detection was obtained 8.6×10−7molL-1. A turn-on fluorescent chemosensor is introduced for the detection of Lu3+ ion using N-[3-methyl]-2-[pyridine-2-amido] phenyl] pyridine-2-carboxamide (L) molecule. Fluorescent emission intensity of L enhances after binding to Lu3+ ions in ethanol–water solution (1:9, v/v). The observed enhancement is the result of a strong covalent binding between Lu3+ ion and L (the binding constant value is 2.0×106mol−1L). The proposed optical chemosensor can be applied for the analysis of Lu3+ ion in a linear range of 3.3×10−7 to 1.0×10−5molL−1. The limit of detection was obtained 8.6×10−7molL−1. The probe exhibits high selectivity toward Lu3+ ion in comparison with common metal ions. The proposed fluorescent chemosensor was successfully used in the determination of Lu3+ ion in some water samples.