Chitosan Schiff base for the spectrofluorimetric analysis of E-waste toxins: Pentabromophenol, Fe3+, and Cu2+ ions

Gupta, Harshita; Kaur, Kulwinder; Singh, Raghubir; Kaur, Varinder

doi:10.1007/s10570-022-04966-z

Cited by 11 publications

(2 citation statements)

References 59 publications

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“…Chitosan SBs have shown interesting biological activities [83] as being anticancer [84,85], antioxidant [86][87][88], antibacterial [89][90][91][92], and antidiabetic [93]. Some chitosan-based SBs are used for the removal of toxic metal ions from the aqueous medium, including Fe(III) [94], Pb(II) [95], Cu(II), Cd(II) [96], Cr(III) [97], and Cr(VI) [98,99]. Some authors also describe chitosan SBs complexes with metals and their biological activities as antitumoral and antimicrobial.…”

Section: Chitosan Sbs Complexes As Antimicrobialsmentioning

confidence: 99%

Metal Complexes with Schiff Bases as Antimicrobials and Catalysts

Iacopetta,

Ceramella,

Catalano

et al. 2023

Inorganics

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Complexes of Schiff bases (SBs) with metals are promising compounds exhibiting a broad range of applications, such as catalysts, polymers, dyes, and several biological activities, including antimicrobial, anticancer, antioxidant, antimalarial, analgesic, antiviral, antipyretic, and antidiabetic actions. Considering the crisis that the whole world is now facing against antimicrobial-resistant bacteria, in the present review, we chose to focus on the activity of SBs as antimicrobials, particularly underlying the most recent studies in this field. Finally, some interesting catalytic applications recently described for metal complexes with SBs have also been discussed.

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Section: Chitosan Sbs Complexes As Antimicrobialsmentioning

confidence: 99%

Metal Complexes with Schiff Bases as Antimicrobials and Catalysts

Iacopetta,

Ceramella,

Catalano

et al. 2023

Inorganics

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“…Heavy metals such as iron and copper, which chelate with the -OH and -NH2 groups in chitosan, cause a change in the emission signal due to the photoinduced electron transfer (PET) mechanism. Electron transfer occurs from the excited compound to the electrondeficient metal ions with Lewis acid character and quenches the emission signal of the fluorescence compound [51]. The -OH groups that provide charge transfer from the ligand to the metal ion were deprotonated after the interaction of Chit-Pyr with Fe 2+ , Fe 3+ , and Cu 2+ .…”

Section: "Turn-off" Fluorescence Sensor Studiesmentioning

confidence: 99%

A “Turn off” fluorescence sensor for Fe2+, Fe3+, and Cu2+ ions based on novel pyrene-functionalized chitosan

Ömeroğlu

Şanko

2023

Turkish Journal of Analytical Chemistry

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Iron and copper ions detection are very important for environmental and biological processes. In this work, novel pyrene-functionalized Schiff base chitosan (Chit-Pyr) was synthesized, and this hybrid material was used as a “turn-off” fluorescence sensor for the detection of Fe2+, Fe3+, and Cu2+ ions. FTIR, UV-Vis, TGA, and SEM were used to examine for structural, thermal, and morphological properties of Chit-Pyr. This sensor exhibited a selectivity towards Fe2+, Fe3+, and Cu2+ ions among several common metal cations in the DMF dispersion. The results obtained that the proposed “turn off” fluorescence sensing mechanism of Chit-Pyr was simple and sensitive for the determination of Fe2+, Fe3+, and Cu2+ ions.

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