We prepared rhodopsin mutants that contained a single reactive cysteine residue per rhodopsin molecule at position 65, 140, 240, or 316 on the cytoplasmic face. A carbene-generating photoactivatable group was linked by a disulfide bond to the cysteine sulfhydryl group of each of the rhodopsin mutants. The resulting derivative was then light-activated at lambda > 495 nm to form the metarhodopsin...

Hyaluronic acid (HA)-based (sub)micron hydrogel particles were synthesized by crosslinking virgin HA with divinyl sulfone (DVS) in sodium bis(2-ethylhexyl)sulfosuccinate (AOT) reverse micelle systems under basic conditions. Experimental parameters including HA molecular weight, solution concentration, and reaction time were systematically varied in order to obtain well defined hydrogel particle...

Copolymers of methyl methacrylate(MMA) with polypropylene glycol diacrylate(PPGDA) and polypropylene glycol dimethacrylate(PPGDMA) have been synthesized. The characterization of synthesized copolymers are carried out using the techniques such as elemental analysis, Fourier Transform Infrared Spectroscopy(FTIR) and Differential Scanning Calorimetry(DSC). FTIR studies showed that double bond of M...

Fe3O4 nanoparticles decorated on cellulose aerogel (CA) from banana stems (Fe3O4@CA) were synthesized for application in the Fenton degradation of p-nitrophenol (PNP). Cellulose extracted raw was with kymene as a crosslinking agent and freeze-dried method. The Fe3O4@CA samples characterized by X-ray diffraction (XRD), Energy-dispersive spectroscopy (EDS), Scanning Electron Microscope (SEM), Tra...

Hemicelluloses are widely used to prepare gel materials because of their renewability, biodegradability, and biocompatibility. Here, molecular chain extension of hemicelluloses was obtained in a two-step process. Composite hydrogels were prepared via free radical graft copolymerization of crosslinked quaternized hemicelluloses (CQH) and acrylic acid (AA) in the presence of crosslinking agent N,...

Electrospun alginate-based materials are used in a wide range of applications, including wound dressings, tissue engineering, batteries, water treatment, bioremediation, and food packaging. However, they have low resistance to water. Crosslinking is usually enhance the mechanical properties water-soluble polymers. Process parameters also play key role crosslinking process. In this study, from s...

Thermoplastic polyolefins (TPOs) crosslinked by dynamic covalent bonds (xTPOs) have the potential to be most utilized class of polymer in world, with applications ranging from household and automotive biomedical devices additive manufacturing. xTPO combines benefits thermoplastics thermosets a “single material” potentially avoids their shortcomings. Here, we describe new two-stage reaction extr...