Conducting copolymers nanocomposite coatings with aggregation-controlled luminescence and efficient corrosion inhibition properties

Aly, Kamal I.; Younis, Osama; Mahross, Mahmoud H.; Orabi, Esam A.; Abdel-Hakim, Mohamed; Tsutsumi, Osamu; Mohamed, Mohamed Gamal; Sayed, Marwa M.

doi:10.1016/j.porgcoat.2019.06.001

Cited by 40 publications

(22 citation statements)

References 47 publications

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“…It is known that the inhibition mechanism of the mild steel surface is attributed to the formation of the protective layer of the inhibitor (good electron donor or electron acceptor) 74 , which retards the attack of corrosive media on the steel surface. This inhibition is the highest in polymer samples owing to their complexation with the metal surface, especially if they contain hetero atoms in their structure as O, S, and N atoms 34 – 36 . PSF2 has a high degree of crosslinking and D-π-A, while PSF1 does not have TBA in its structural unit responsible for this reactivity and thus lower inhibition efficiency 75 .…”

Section: Resultsmentioning

confidence: 99%

Synthesis, physico-chemical characterization, and environmental applications of meso porous crosslinked poly (azomethine-sulfone)s

Sayed

Abdel-Hakim

Mahross

et al. 2022

Sci Rep

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To develop innovative mesoporous crosslinked poly(azomethine- sulfone)s with environmental applications, a simple Schiff base condensation technique based on barbituric acid BA or condensed terephthaldehyde barbituric acid TBA in their structures as monomeric units are applied. Different analysis methodologies and viscosity measurements identify them as having stronger heat stability and an amorphous structure. The photophysical features of the multi stimuli response MSR phenomenon are observable, with white light emission at higher concentrations and blue light emission at lower concentrations. Their emission characteristics make them an excellent metal ions sensor through diverse charge transfer methods. They can have a better inhibition efficiency and be employed as both mixed-type and active corrosion inhibitors according to their fluorescence emission with metals, demonstrating their capacity to bind with diverse metals. The adsorption of two distinct dye molecules, Methylene blue MB cationic and sunset yellow SY anionic, on the mesoporous structures of the polymers is investigated, revealing their selectivity for MB dye adsorption. Quantum studies support these amazing discoveries, demonstrating a crab-like monomeric unit structure for the one that is heavily crosslinked.

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Section: Resultsmentioning

confidence: 99%

Synthesis, physico-chemical characterization, and environmental applications of meso porous crosslinked poly (azomethine-sulfone)s

Sayed

Abdel-Hakim

Mahross

et al. 2022

Sci Rep

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“…Tang et al have, however, discovered an interesting phenomenon in which some dyes are luminescent in their solid states and named it “aggregation-induced emission (AIE)” . This discovery was followed by the design and synthesis of several organic compounds with AIE. − The spectral properties of some AIE-luminogens depend on the structure of the molecular aggregate without changing the luminescent core. − AIE-active chromophores have recently been used in numerous biological applications, such as detecting biomacromolecules and as bioprobes for DNA or protein. − To be suitable for such applications, the chromophores should additionally be biocompatible . Heterocyclic compounds seem good candidates for this purpose as many of them are light-emitting and have various biological activities .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Novel Biocompatible Thienopyrimidine Chromophores with Aggregation-Induced Emission Sensitive to Molecular Aggregation

et al. 2020

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Biocompatible luminogens with aggregation-induced emission (AIE) have several applications in the biology field, such as in detecting biomacromolecules bioprobes and in bio-imaging. Due to their bioactivities and light-emitting properties, many heterocyclic compounds are good candidates for such applications. However, heterocyclic π-conjugated systems with AIE behavior remain rare as strong intermolecular π–π interactions usually quench their emission. In this work, new thienopyrimidine heterocyclic compounds were synthesized and their structures were verified by elemental analysis and Fourier transform infrared (FT-IR), 1H nuclear magnetic resonance (NMR), and 13C NMR spectra. The photophysical properties of some compounds were investigated in the solution and solid states. Density functional theory calculations were also performed to confirm the observed photophysical properties of the compounds. The studied dyes displayed AIE properties with spectral shapes related to the aggregate structure and a quantum yield up to 10.8%. The emission efficiency of the powder is attributed to the incorporation of multiply rotatable and twisted aryl groups to the fused heterocyclic moieties. The dyes also showed high thermal stability and potent antimicrobial activities against numerous bacterial and fungal strains. Additionally, the cytotoxicity of the new compounds was evaluated against the Caco-2 cell line, and molecular docking was used to investigate the binding conformation of the most effective compound with the MNK2 enzyme. Therefore, the presented structures may potentially be used for bioapplications.

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“…The copolymer as poly (maleic anhydride-co-N-vinyl-2-pyrrolidone), poly (3,4-ethylenedioxythiophene-co-indole-5-carboxylic acid), poly (methyl methacrylate-co-Nvinyl-2-pyrrolidone), and polyaniline/polystyrene/polybutadiene were reported as effective corrosion inhibitors [17][18][19][20]. The electrochemical measurements, UV-Vis spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, Raman and Fourier-transform infrared spectroscopy, and thermogravimetric analysis were employed to investigate the composition and efficiency of polymer films adsorbed under various conditions and changing the steel surface features [21][22][23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Poly (Vinyl Butyral-Co-Vinyl Alcohol-Co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment

et al. 2020

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Poly (vinyl butyral-co-vinyl alcohol-co-vinyl acetate) named further PVBA was investigated as a protective coating for copper corrosion in 0.9% NaCl solution using electrochemical measurements such as, electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization associated with atomic force microscopy (AFM). The PVBA coating on the copper surface (Cu-PVBA) was modeled in methanol containing PVBA. Its inhibitory properties against corrosion was comparatively discussed with those of the copper sample treated in methanol without polymer (Cu-Me) and of untreated sample (standard copper). A protective performance of PVBA coating of 80% was computed from electrochemical measurements, for copper corrosion in NaCl solution. Moreover, AFM images designed a specific surface morphology of coated surface with PVBA, clearly highlighting a polymer film adsorbed on the copper surface, which presents certain deterioration after corrosion, but the metal surface was not significantly affected compared to those of untreated samples or treated in methanol, in the absence of PVBA.

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Conducting copolymers nanocomposite coatings with aggregation-controlled luminescence and efficient corrosion inhibition properties

Cited by 40 publications

References 47 publications

Synthesis, physico-chemical characterization, and environmental applications of meso porous crosslinked poly (azomethine-sulfone)s

Synthesis, physico-chemical characterization, and environmental applications of meso porous crosslinked poly (azomethine-sulfone)s

Synthesis of Novel Biocompatible Thienopyrimidine Chromophores with Aggregation-Induced Emission Sensitive to Molecular Aggregation

Poly (Vinyl Butyral-Co-Vinyl Alcohol-Co-Vinyl Acetate) Coating Performance on Copper Corrosion in Saline Environment

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