Characterisation, structural investigations and biological activity of substituted salicylidene-based compounds

Dyk, Hannah van; Jacobs, Francois J. F.; Kroon, R.E.; Makhafola, Tshepiso Jan; Brink, Alice

doi:10.1016/j.molstruc.2022.134737

Cited by 1 publication

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“…The chemical structure of PBIF-Va was further characterized by solid-state 13 C NMR (CP/MAS) (Figure 1b). The tiny carbon signal at δ ∼192.7 ppm might correspond to the C�O of the aldehyde group in vanillin, 41 and the signal at δ ∼169.2 ppm can be assigned to the C�O in amide. 42 The signals at δ ∼150.9−146.7 ppm might be assigned to the carbon atoms of imine (−C�N−) and phenol (−C−OH) moieties.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb²⁺/NO₂^– Electrochemical Probing

Zhang

Shi

et al. 2023

ACS Appl. Polym. Mater.

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As the pollution by heavy metal lead ion (Pb 2+ ) and nitrite (NO 2 − ) is becoming increasingly severe, the development of probes for hazardous Pb 2+ /NO 2 − is of great practical significance. Most of the reports regarding Pb 2+ /NO 2 − electrochemical probes are based on the involvement of active modifiers that can facilitate the detection of these two pollutants separately, and the active modifier for promoting both Pb 2+ /NO 2 − electrochemical probing has not been reported yet. Herein, by selecting cross-linked polyfluoreneisocyanide (PBIF) and vanillin/furfurylamine-based biomass benzoxazine (Va-Bz) as the starting substrates, a polyisocyanide derivative (PBIF-Va) with various N/O-containing motifs (amide, imine, tertiary amine, and phenolic −OH) was prepared by solidstate benzoxazine-isocyanide chemistry (ssBIC) postmodification. The elementary properties of PBIF-Va, such as the chemical structure and microscopic morphology, were characterized. The modified glassy carbon electrodes (GCEs) with PBIF-Va as the key modifier, PBIF-Va/Nafion/GCE and PBIF-Va/chitosan (CS)/GCE, were prepared, and their electrochemical response toward Pb 2+ and NO 2 − was investigated here. Experimental results showed that compared with the precursor (PBIF)-containing electrodes (PBIF/Nafion/GCE and PBIF/CS/GCE), the modified electrodes with PBIF-Va as the modifier (PBIF-Va/Nafion/GCE and PBIF-Va/CS/GCE) exhibited stronger electrochemical responses toward both Pb 2+ and NO 2 − , and the corresponding detection limits reached 0.054 μM (for Pb 2+ ) and 0.38 μM (for NO 2 − ), respectively.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb²⁺/NO₂^– Electrochemical Probing

Zhang

Shi

et al. 2023

ACS Appl. Polym. Mater.

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Characterisation, structural investigations and biological activity of substituted salicylidene-based compounds

Cited by 1 publication

References 72 publications

Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb²⁺/NO₂^– Electrochemical Probing

Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb²⁺/NO₂^– Electrochemical Probing

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Characterisation, structural investigations and biological activity of substituted salicylidene-based compounds

Cited by 1 publication

References 72 publications

Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb2+/NO2– Electrochemical Probing

Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb2+/NO2– Electrochemical Probing

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Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb²⁺/NO₂^– Electrochemical Probing

Bioamide-Decorated Polyfluoreneisocyanide: Preparation from Benzoxazine-Isocyanide Mechanochemistry Postmodification and Application as an Active Modifier for Pb²⁺/NO₂^– Electrochemical Probing