Soumaya Agren, Jamal El Haskouri, Emmanuel Beyou, Mohamed Hassen V Baouab
{"title":"L-Lysine-derived fluorescent salicylidenes: synthesis, characterization and turn-off Cu2+ and Co2+ selective cation sensing","authors":"Soumaya Agren, Jamal El Haskouri, Emmanuel Beyou, Mohamed Hassen V Baouab","doi":"10.1007/s13738-024-03052-4","DOIUrl":null,"url":null,"abstract":"<div><p>Two L-lysine-derived salicylidene ligands have been synthesized under ultrasound irradiations and characterized by several spectroscopic techniques. Both ligands exhibited a blue fluorescence emission in ethanolic solutions. (S, E)-3-Amino-7-((2-hydroxybenzylidene) amino) heptanoic acid (A) and (S, E)-3-amino-7-((4-chloro-2-hydroxybenzylidene) amino) heptanoic acid (B) showed a turn-off sensing of Cu<sup>2+</sup> and Co<sup>2+</sup> cations, respectively, over several tested transition metal cations such as Fe<sup>2+</sup>, Zn<sup>2+</sup>, Cr<sup>3+</sup>, Co<sup>2+</sup>, Ni<sup>2+</sup> and Cu<sup>2+</sup> in aqueous media. The ability of both tested L-lysine-derived ligands (A) and (B) to distinguish Cu<sup>2+</sup> and CO<sup>2+</sup>, respectively, has been verified by optical studies, showing new absorption bands around 304 and 391 nm for (A)-Cu<sup>2+</sup> and a new band around 455 nm for (B)-Co<sup>2+</sup> along with the disappearance of the original bands supporting thereby the noticed Turn–Off results.</p><h3>Graphical abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":676,"journal":{"name":"Journal of the Iranian Chemical Society","volume":"21 8","pages":"2103 - 2112"},"PeriodicalIF":2.2000,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Iranian Chemical Society","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s13738-024-03052-4","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Two L-lysine-derived salicylidene ligands have been synthesized under ultrasound irradiations and characterized by several spectroscopic techniques. Both ligands exhibited a blue fluorescence emission in ethanolic solutions. (S, E)-3-Amino-7-((2-hydroxybenzylidene) amino) heptanoic acid (A) and (S, E)-3-amino-7-((4-chloro-2-hydroxybenzylidene) amino) heptanoic acid (B) showed a turn-off sensing of Cu2+ and Co2+ cations, respectively, over several tested transition metal cations such as Fe2+, Zn2+, Cr3+, Co2+, Ni2+ and Cu2+ in aqueous media. The ability of both tested L-lysine-derived ligands (A) and (B) to distinguish Cu2+ and CO2+, respectively, has been verified by optical studies, showing new absorption bands around 304 and 391 nm for (A)-Cu2+ and a new band around 455 nm for (B)-Co2+ along with the disappearance of the original bands supporting thereby the noticed Turn–Off results.
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