Synthesis, Structural Characterization, Enzymatic and Oxidative Polymerization of 2,6-Diaminopyridine

Şenol, Dilek

doi:10.1007/s10895-019-02481-2

Cited by 9 publications

(4 citation statements)

References 49 publications

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“…37 Compared with the DAP monomer, the increased wavenumber of the second peak after the reaction indicates a polyconjugated bond structure of the product and it is more electrically conductive than its monomer. 38 Moreover, a more detailed polymerization investigation was carried out based on HPLC results. The calculated DAP conversion relationship with reaction time is established in Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of poly(2,6-diaminopyridine) using a rotating packed bed toward efficient production of polypyrrole-derived electrocatalysts

Long

Jiao

et al. 2022

React. Chem. Eng.

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Section: Resultsmentioning

confidence: 99%

Synthesis of poly(2,6-diaminopyridine) using a rotating packed bed toward efficient production of polypyrrole-derived electrocatalysts

Long

Jiao

et al. 2022

React. Chem. Eng.

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“…The generation of photocurable SFMA forms acylated SF hydrogels under UV light and I2959 excitation [32]. SF contains approximately 10% tyrosine residues, which have phenolic hydroxyl groups that can be oxidized with HRP to form di-tyrosine [33][34][35]. This feature allowed the enzymatic crosslinking by HRP (Figure 5D), combining with H 2 O 2 .…”

Section: Gelation Mechanism Analysismentioning

confidence: 99%

“…Polymers 2023, 15, x FOR PEER REVIEW 9 of 13 that can be oxidized with HRP to form di-tyrosine [33][34][35]. This feature allowed the enzymatic crosslinking by HRP (Figure 5D), combining with H2O2.…”

Section: Gelation Mechanism Analysismentioning

confidence: 99%

Comparison of Silk Hydrogels Prepared via Different Methods

Hua,

Huang,

Huang

et al. 2023

Polymers

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Silk fibroin (SF) hydrogels have garnered extensive attention in biomedical materials, owing to their superior biological properties. However, the challenges facing the targeted silk fibroin hydrogels involve chemical agents and shortfalls in performance. In this study, the silk fibroin hydrogels were prepared in different ways: sonication induction, chemical crosslinking, photopolymerization, and enzyme-catalyzed crosslinking. The SF hydrogels derived from photopolymerization exhibited higher compressive properties, with 124 Kpa fracture compressive stress and breaks at about 46% compression. The chemical crosslinking and enzyme-catalyzed silk fibroin hydrogels showed superior toughness, yet sonication-induced hydrogels showed brittle performance resulting from an increase in silk II crystals. The chemical-crosslinked hydrogel demonstrated lower thermostability due to the weaker crosslinking degree. In vitro, all silk fibroin hydrogels supported the growth of human umbilical vein endothelial cells, as the cell viability of hydrogels without chemical agents was relatively higher. This study provides insights into the formation process of silk fibroin hydrogels and optimizes their design strategy for biomedical applications.

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“…Considering this, polymer‐metal complex was studied in UV‐Vis spectrophotometer. Enzymatic and chemical oxidative polymers were synthesized in Horseradish peroxidase (HRP)/hydrogen peroxide (H 2 O 2 ), 4‐aminosalicylic acid, [15] carbazole containing hydroxy functional group, [16] 2,6‐diamino pyridine [17] . The structure of the polymers which were synthesized by both methods was illuminated and characterized and compared with TGA, CV, and SEM measurements.…”

Section: Introductionmentioning

confidence: 99%

Biological Activity and Optical Sensor Properties of Green Synthesis Polymer

2022

Self Cite

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In this study, 4-amino-3-hydroxy-1-naphthalene sulfonic acid (Monomer) was converted to its enzyme-catalyzed oxidative polymerization (Poly-enz) in dioxane solvent by horseradish peroxidase enzyme (HRP) in the presence of hydrogen peroxide as oxidant. For the analysis of the monomer and its synthesized Poly-enz, 1 H-NMR, 13 C-NMR, FT-IR, TGA, and SEM measurements were determined. In addition, the optical ion sensor properties of Poly-enz against metals such as Ag + , Cd 2 + , Co 2 + , Hg 2 + , Ni 2 + , Pb 2 + , Zn 2 + , Cu 2 + were examined with UV-Vis spectrophotometer. It was observed that Cu metal showed sensory properties. DNA cleavage and DNA binding activities of monomer and Poly-enz were done using by agarose gel electrophoresis and UV-Vis methods, respectively. It was seen that the Poly-enz interacted with DNA electrostatically. This enzymatic polymer was found to cleave pBR322 plasmid DNA both hydrolytically and oxidatively as well. The antioxidant activities of the compounds were examined by three different methods (DPPH, ABTS, FRAP) and it was found that the Poly-enz showed high antioxidant activity compared to its monomer. Antimicrobial activities were studied against various bacterial and yeast cultures by the minimum inhibition concentration (MIC) method. It was observed that the antimicrobial activities of the enzymatic polymer in different microorganisms increased depending on the concentration.

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Synthesis, Structural Characterization, Enzymatic and Oxidative Polymerization of 2,6-Diaminopyridine

Cited by 9 publications

References 49 publications

Synthesis of poly(2,6-diaminopyridine) using a rotating packed bed toward efficient production of polypyrrole-derived electrocatalysts

Synthesis of poly(2,6-diaminopyridine) using a rotating packed bed toward efficient production of polypyrrole-derived electrocatalysts

Comparison of Silk Hydrogels Prepared via Different Methods

Biological Activity and Optical Sensor Properties of Green Synthesis Polymer

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