A new triphenylamine-pyrenyl salicylic acid fluorophore for the detection of highly selective Cu(II) ions in an aqueous media at the picomolar level
Journal article
Authors/Editors
Strategic Research Themes
Publication Details
Author list: Santiwat T., Sornkaew N., Mayurachayakul P., Srikittiwanna K., Pratumyot K., Sukwattanasinitt M., Niamnont N.
Publisher: Elsevier
Publication year: 2022
Journal: Journal of Molecular Structure (0022-2860)
Volume number: 1259
Start page: 132735
ISSN: 0022-2860
eISSN: 1872-8014
Languages: English-Great Britain (EN-GB)
View in Web of Science | View on publisher site | View citing articles in Web of Science
Abstract
Cu2+ is the third most prevalent transition metal ion in critical biological systems, although it is poisonous to humans. As a result of this, establishing a mechanism for selectively detecting the Cu2+ ion in an aqueous medium is crucial. A new triphenylamine-pyrenyl salicylic acid probe (Compound 3) was produced utilizing the Sonograshira reaction, the Suzuki cross-coupling process combined with a hydrolysis reaction for Cu2+ detection with a fluorescent turn-off mode. In the presence of Cu2+, Compound 3 operated as both a highly selective and highly sensitive fluorescent Cu2+ sensor in a 100% aqueous medium. Consequently, the fluorescence intensity of Compound 3 showed a strong linear relationship with the Cu2+ ion concentration in the 10 to 1000 pM range. The detection limit of the approach was 5.22 pM, which was less than the maximum Cu2+ level in drinking water, as suggested by the US Environmental Protection Agency of 19 µM. (EPA). Therefore, Compound 3 was successfully used to determine the concentration of Cu2+ in real samples. © 2022
Keywords
Copper (II) ion, Fluorescent sensor, Photoinduced electron transfer (PET), Pyrene
Contact Information