Ferric ion detection mechanism of a dicarboxylic cellulose nanocrystal and a 7-amino-4-methylcoumarin based fluorescent chemosensor

Abstract

As one of Earth's most widely distributed and abundant elements, iron impacts the natural environment and biological systems.

Application of Plackett–Burman Design for Spectrochemical Determination of the Last-Resort Antibiotic, Tigecycline, in Pure Form and in Pharmaceuticals: Investigation of Thermodynamics and Kinetics

“…The formation constant for the charge transfer reaction of TIGC and TCNQ was calculated using the Benesi–Hildebrand equation [ 40 , 41 , 42 , 43 ] as follows (Equation (6)): where [ A o ] and [ D o ] denote the initial concentrations of TCNQ and TIGC, respectively, and A AD , ε AD , and are the absorbance, the molar absorptivity, and the formation constant of the CTC, respectively. The Benesi–Hildebrand equation can be applied for the 1:1 CTC by keeping [ A o ] lower than [ D o ].…”

“…The formation constant for the charge transfer reaction of TIGC and TCNQ was calculated using the Benesi-Hildebrand equation [40][41][42][43] as follows (Equation ( 6)): 8.…”

Recent advances in cellulose nanocrystals-based sensors: a review

“…By exploiting the surface functionality of the nanocrystals, their nanocomposite hydrogels attained high transparency, excellent mechanical strength, and 3D printability simultaneously. Sun et al (2022) 155 have reported iron sensing, specifically Fe 3+ . 7-Amino-4-methylcoumarin (AMC) and decarboxylated CNCs (DCN) underwent successive periodate–chlorite oxidation to produce fluorescent dicarboxylic CNCs (FDCN) with selective quenching of Fe 3+ .…”

One-pot in situ functionalization of cellulose in a CO2 switchable solvent for the fluorescent detection of Fe3+

“…In addition, new peaks appear at 938 cm −1 and 470 cm −1 , which can be attributed to the newly formed Fe-O bond. 2,57,58 Secondly, when Fe 3+ is added, the binding energy peaks at the O 2 -C-O 2 bond (533.93 eV) and C]O 1 (532.35 eV) at the carbonate position are signicantly lower compared to those of pristine C-g-PLLA/MCD (Fig. 5(b)), and both the O 1s peak of O-Fe and Fe 2p peak appear at 531.77 eV and 712.50 eV, respectively aer the addition of Fe 3+ .…”