Potential application of some coumarin derivatives incorporated thiazole ring as ecofriendly antimicrobial, flame retardant and corrosion inhibitor additives for polyurethane coating

El‐Fattah, M. Abd; El‐Wahab, H. Abd; Bashandy, Mahmoud S.; El-Eisawy, R.A.; El‐Hai, F. Abd; Saeed, Mohamed Ahmed

doi:10.1016/j.porgcoat.2017.05.005

Cited by 24 publications

(18 citation statements)

References 33 publications

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“…Bacterial contamination of surgical tools, implants, catheters, and surfaces in hospitals causes infections and underline the need of antimicrobial polymeric coatings [ 10 ]. Due to the antimicrobial [ 17 , 18 , 19 , 144 , 145 , 146 ], antifungal [ 3 ], and antibacterial [ 3 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 147 ] activity of coumarin moieties, it is an interesting molecule for biological active polymeric coatings.…”

Section: Biological and Medical Applications Of Polymers With Coummentioning

confidence: 99%

“…Recently, researchers have started to incorporate coumarin derivatives into polyurethane coatings to enhance their antimicrobial activity [ 144 , 145 ]. El-Wahab et al synthesized a coumarin thiazole moiety 2-(2-amino-1,3-thiazol-4-yl)-3H-benzo[f]chromen-3-one ( Figure 21 ) and mixed it with a polyurethane coating based on sunflower oil, glycerol, pentaerythritol, toluene diisocyanate, and turpentine.…”

Section: Biological and Medical Applications Of Polymers With Coummentioning

confidence: 99%

“…The limiting oxygen index (LOI) of polyurethane was 20 and increased to 43 by incorporating 1.5 wt.% of compound 2. The flame retardant efficiency and the antimicrobial activity of the synthesized derivatives decreased in the following order: compound II > III > I [ 145 ]. Jaiswal et al incorporated silver nitrate and carboxylated coumarin—silver complexes into sol–gel materials to prepare coatings on glass slides and in microtiter wells.…”

Section: Biological and Medical Applications Of Polymers With Coummentioning

confidence: 99%

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Recent Advances in Functional Polymers Containing Coumarin Chromophores

et al. 2020

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Natural and synthetic coumarin derivatives have gained increased attention in the design of functional polymers and polymer networks due to their unique optical, biological, and photochemical properties. This review provides a comprehensive overview over recent developments in macromolecular architecture and mainly covers examples from the literature published from 2004 to 2020. Along with a discussion on coumarin and its photochemical properties, we focus on polymers containing coumarin as a nonreactive moiety as well as polymer systems exploiting the dimerization and/or reversible nature of the [2πs + 2πs] cycloaddition reaction. Coumarin moieties undergo a reversible [2πs + 2πs] cycloaddition reaction upon irradiation with specific wavelengths in the UV region, which is applied to impart intrinsic healability, shape-memory, and reversible properties into polymers. In addition, coumarin chromophores are able to dimerize under the exposure to direct sunlight, which is a promising route for the synthesis and cross-linking of polymer systems under “green” and environment-friendly conditions. Along with the chemistry and design of coumarin functional polymers, we highlight various future application fields of coumarin containing polymers involving tissue engineering, drug delivery systems, soft robotics, or 4D printing applications.

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Section: Biological and Medical Applications Of Polymers With Coummentioning

confidence: 99%

Section: Biological and Medical Applications Of Polymers With Coummentioning

confidence: 99%

Section: Biological and Medical Applications Of Polymers With Coummentioning

confidence: 99%

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Recent Advances in Functional Polymers Containing Coumarin Chromophores

et al. 2020

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“…Taking advantage of other potential properties of coumarin derivatives, El-Wahab and colleagues have studied the effect of a new series of coumarins as functional additives in a polyurethane coating [133,134]. Their first approach was based on creating a hybrid antimicrobial structure from coumarin and a thiazole ring, which are identified biologically active compounds.…”

Section: Other Properties Of Coumarin Additives In Polyurethanesmentioning

confidence: 99%

“…More recently, from those previous results, new coumarin and benzocoumarin derivatives incorporating a thiazole ring were synthesised and evaluated again as potential antibacterial additives, but also as flame retardant and corrosion inhibitor compounds [134]. Chart 11 shows the chemical structure of these modified coumarins.…”

Section: Other Properties Of Coumarin Additives In Polyurethanesmentioning

confidence: 99%

Coumarins into Polyurethanes for Smart and Functional Materials

et al. 2020

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Polyurethanes are of undoubted interest for the scientific community and the industry. Their outstanding versatility from tailor-made structures turns them into major polymers for use in a wide range of different applications. As with other polymers, new, emerging molecules and monomers with specific attributes can provide new functions and capabilities to polyurethanes. Natural and synthetic coumarin and its derivatives are characterised by interesting biological, photophysical and photochemical properties. Then, the polyurethanes can exploit those features of many coumarins which are present in their composition to achieve new functions and performances. This article reviews the developments in the proper use of the special properties of coumarins in polyurethanes to produce functional and smart materials that can be suitable for new specific applications.

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New Gd(I)/Cs(III) complexes of benzil‐based thiocarbohydrazone macrocyclic ligand: Chemical synthesis, characterization, and study their biological effectiveness as antibacterial, antioxidant, and antiviral additives for polyurethane surface coating

Eliwa

Elgammal

Sharaf

et al. 2022

Applied Organom Chemis

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Germs are transmitted in different ways and remain viable or infectious on metal, glass, wood, fabrics, and plastic surfaces for prolonged periods of time. Thus, sterilizing commonly handled everyday objects and public places with high contamination potential is a major global strategy to combat the spread of pathogenic microorganisms. Consequently, our response is development of durable surface‐active coating embedded with new Gd(I)/Cs(III) complexes that derived from condensation of thiocarbohydrazide and benzil precursors. Chemical structures of these complexes were elucidated by Fourier transform infrared (FTIR), electron impact ionization (EI‐MS), 1H nuclear magnetic resonance (NMR), elemental analysis, and scanning electron microscopy (SEM). Next, the well‐established complexes were physically mixed with wide‐range applicable polyurethane (PU) varnish as potential biocide agents. With laboratory scale, coating material was loaded into stainless steel and wood panels to evaluate the physical and mechanical properties. In comparison with the blank formulation, our additives enhanced the gloss levels of the developed PU from 75 to 80 gloss unit (GU), and the scratch hardness was increased to reach >2 kg. Meanwhile, all the coated films passed the flexibility bend test and showed none flaking in mechanical adhesion test. Consequently, Gd(I) and Cs(III) metal complexes did not show any undesirable side effects on PU coating performance. Concerning biological screening, macrocyclic Gd(I) and Cs(III) complexes as well as the reformulated PU varnish were assayed for their antibacterial, antioxidant, and antiviral activities. Antibacterial activity of the developed PU was slightly increased than the individual treatments of Gd(I)/Cs(III) complexes by 1–2 mm, although the blank PU showed no obvious activity against all the tested bacterial strains. Antiviral overall results indicated that the Gd(I) and Cs(III) complexes demonstrated higher activity than the developed PU samples against ADeno‐7, CV‐B4, and HSV‐1 viruses in all modes of action, and hence these coordinated compounds could be promising virucidal agents with good biocompatibility.

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Potential application of some coumarin derivatives incorporated thiazole ring as ecofriendly antimicrobial, flame retardant and corrosion inhibitor additives for polyurethane coating

Cited by 24 publications

References 33 publications

Recent Advances in Functional Polymers Containing Coumarin Chromophores

Recent Advances in Functional Polymers Containing Coumarin Chromophores

Coumarins into Polyurethanes for Smart and Functional Materials

New Gd(I)/Cs(III) complexes of benzil‐based thiocarbohydrazone macrocyclic ligand: Chemical synthesis, characterization, and study their biological effectiveness as antibacterial, antioxidant, and antiviral additives for polyurethane surface coating

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