Simple colorimetric copper(II) sensor – Spectral characterization and possible applications

[Display omitted] •New o-hydroxyazocompound L has been obtained.•L was investigated as spectrophotometric colorimetric chemosensor for copper(II).•L-based test strips and cotton swabs can colorimetrically detect copper(II) in water.•L-based copper(II) selective optodes were proposed. New o-hydroxyaz...

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Bibliographic Details
Published in:Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy Molecular and biomolecular spectroscopy, 2023-05, Vol.293, p.122472, Article 122472
Main Authors: Galiński, Błażej, Chojnacki, Jarosław, Wagner-Wysiecka, Ewa
Format: Article
Language:English
Subjects:
Azocompound
Chromoionophore
Copper(II)
Optical sensing
Pyrrole
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Summary:[Display omitted] •New o-hydroxyazocompound L has been obtained.•L was investigated as spectrophotometric colorimetric chemosensor for copper(II).•L-based test strips and cotton swabs can colorimetrically detect copper(II) in water.•L-based copper(II) selective optodes were proposed. New o-hydroxyazocompound L bearing pyrrole residue was obtained in the simple synthetic protocol. The structure of L was confirmed and analyzed by X-ray diffraction. It was found that new chemosensor can be successfully used as copper(II) selective spectrophotometric regent in solution and can be also applied for the preparation of sensing materials generating selective color signal upon interaction with copper(II). Selective colorimetric response towards copper(II) is manifested by a distinct color change from yellow to pink. Proposed systems were effectively used for copper(II) determination at concentration level 10−8 M in model and real samples of water.
ISSN:1386-1425
DOI:10.1016/j.saa.2023.122472