Surface modification of polymers with bis(arylcarbene)s from bis(aryldiazomethane)s: preparation, dyeing and characterization

Yang, Pengfei; Moloney, Mark G.

doi:10.1039/c6ra24392d

Cited by 15 publications

(13 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This confirmed the successful modification with fluorodiazomethanes 5a-b. The surface loadings of 6a-b could be determined by a combination of surface area measurement by BET analysis and quantitation of nitrogen content by elemental combustion analysis (full details are given in the Supplementary Information (Table 3, SI)), and are very similar to the values that have been reported [26].…”

Section: Resultssupporting

confidence: 64%

Surface hydrophobic modification of polymers with fluorodiazomethanes

et al. 2018

Self Cite

View full text Add to dashboard Cite

Two fluorinated diazomethanes were synthesized, and used for the modification of polystyrene XAD4, polyacrylate MAC-3, filter paper, and Hybond TM membrane. The structure of modified polymers was con-firmed by XPS and solid-state NMR spectra, with a surface loading of 8.28 10 12 -1.68 10 13 molecules per cm 2 . Water contact angle values, which increased from 0L to 128.51L (for filter paper) and 120.02L (for Hybond TM membrane), demonstrated hydrophobicity.

show abstract

Section: Resultssupporting

confidence: 64%

Surface hydrophobic modification of polymers with fluorodiazomethanes

et al. 2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to the references 28 , 44 , a mixture of manganese dioxide (2.52 g, 28.4 mmol), sodium sulfate (2.17 g, 15.3 mmol), and potassium hydroxide (0.86 g, 15.4 mmol) was added to a solution of 2 (1.72 g, 5.26 mmol) in dichloromethane (80 ml). The mixture was vigorously stirred for 10 h in the dark, and then filtered through a pad of Celite.…”

Section: Methodsmentioning

confidence: 99%

Carbene modification and reversible crosslinking of silver nanoparticles for controlled antibacterial activity

Jing

Moloney

et al. 2020

Sci Rep

Self Cite

View full text Add to dashboard Cite

Silver nanoparticles (Ag NPs) system capable of exhibiting different particle size at different temperature was developed, which depended on the extent of Diels–Alder (DA) reaction of bismaleimide with furan. Thus, Ag NPs were functionalized on the surface by a furyl-substituted carbene through an insertion reaction. Subsequent reversible DA crosslinking achieved a controlled aggregation with different particle size, which gives a series of different antibacterial activity. These Ag NPs were characterized by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), X-ray Photoelectron Spectroscopy (XPS), and Nanoparticle Size Analyzer. The aggregation of the Ag NPs could be reliably adjusted by varying the temperature of DA/reverse-DA reaction. The antibacterial activity was assessed using the inhibition zone method against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), which decreased first and then increased in agreement with the size evolution of Ag NPs. This approach opens a new horizon for the carbene chemistry to modify silver nanoparticles with variable size and give controlled antibacterial activity.

show abstract

“…First, several furan‐based monomers were synthesized to prepare polyurethanes, which were subsequently crosslinked with maleimides through the typical DA/rDA reaction. Secondly, perfluoroalkyl diazomethane was synthesized and introduced onto the surface of SiO 2 nanoparticles by carbene insertion approach, which was proved by us to be a short synthetic route with mild reaction conditions, and could be further used to introduce color, fluorescence, biocompatibility, and biocidal properties . Finally, polymer nanocomposite films were prepared by mixing modified SiO 2 nanoparticles with self‐healing polyurethanes, followed by the characterization of their mechanical property and surface performance.…”

Section: Introductionmentioning

confidence: 99%

Self‐healing polyurethane nanocomposite films with recoverable surface hydrophobicity

Yang

Zhang

et al. 2018

J of Applied Polymer Sci

Self Cite

View full text Add to dashboard Cite

It is a great challenge for self‐healing materials to recover their mechanical property and surface hydrophobicity simultaneously after being damaged severely, such as deep and wide surface scratches. In this work, a series of hydrophobic films were prepared by mixing perfluoroalkyl‐loaded SiO2 nanoparticles with thermally self‐healing polyurethane. The Diels–Alder reaction of furan groups with bismaleimides endowed the polyurethane with self‐healing property, and the introduction of perfluoroalkyl chains gave surface hydrophobicity. When being heated, the low surface energy compounds could gradually move onto the surface to make the surface hydrophobicity recoverable. The self‐healing mechanical property and recoverable hydrophobicity would improve the durability and expand the application of polyurethane nanocomposites as self‐cleaning and self‐healing coatings/surfaces. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46421.

show abstract

Surface modification of polymers with bis(arylcarbene)s from bis(aryldiazomethane)s: preparation, dyeing and characterization

Abstract: Modification of polymer beads by a series of bis(arylcarbene) provides materials with different surface chemical characteristics, and a subsequent dyeing process generates colored polymers with a variety of surface functional groups.

Cited by 15 publications

References 38 publications

Surface hydrophobic modification of polymers with fluorodiazomethanes

Surface hydrophobic modification of polymers with fluorodiazomethanes

Carbene modification and reversible crosslinking of silver nanoparticles for controlled antibacterial activity

Self‐healing polyurethane nanocomposite films with recoverable surface hydrophobicity

Contact Info

Product

Resources

About