Enhancing ion transport in charged block copolymers by stabilizing low symmetry morphology: Electrostatic control of interfaces.

Recently, the interest in charged polymers has been rapidly growing due to their uses in energy storage and transfer devices. Yet, polymer electrolyte-based devices are not on the immediate horizon because of the low ionic conductivity. In the present study, we developed a methodology to enhance the ionic conductivity of charged block copolymers comprising ionic liquids through the electrostatic control of the interfacial layers.

Tunable and high tissue adhesive properties of injectable chitosan based hydrogels through polymer architecture modulation.

Chitosan-based hydrogels have been widely used for various biomedical applications due to their versatile properties such as biocompatibility, biodegradability, muco-adhesiveness, hemostatic effect and so on. However, the inherent rigidity and brittleness of pure chitosan hydrogels are still unmanageable, which has limited their potential use in biomaterial research. In this study, we developed in situ forming chitosan/PEG hydrogels with improved mechanical properties, using the enzymatic crosslinking reaction of horseradish peroxidase (HRP).

Solid-State Polymer Electrolytes Based on AB-Type Miktoarm Star Copolymers.

Miktoarm star copolymers composed of three poly(ethylene oxide) (PEO) arms connected to one polystyrene (PS) chain, i.e., PS-(PEO), demonstrated synergistic improvements in the ionic conductivity and mechanical strength by factors of 2-30 compared to those shown by PS-PEO diblock copolymers.

Thermodynamics and phase behavior of acid-tethered block copolymers with ionic liquids.

We investigate the phase behavior of acid-tethered block copolymers with and without ionic liquids. Two phosphonated block copolymers and their sulfonated analogs were synthesized by fine-tuning the degree of polymerization and the acid content. The block copolymers carrying acid groups with ionic liquids exhibited rich phase sequences, i.

Ion Transport in Nanostructured Phosphonated Block Copolymers Containing Ionic Liquids.

The morphology and conductivity of poly(styrenephosphonate-b-methylbutylene) block copolymers containing ionic liquids are investigated. The block copolymers display a series of well-defined self-assembled morphologies, i.e.

In vitro single-vessel enzymatic synthesis of novel Resvera-A glucosides.

An in vitro enzymatic glycosylation system is developed for the efficient synthesis of glucosides of 3,5-dihydroxy-N-(4-hydroxyphenyl) benzamide (resvera-A), a chemically synthesized molecule resembling resveratrol in structure. Resvera-A is a pharamacophore-based designed molecule that exhibits anti-oxidant, antibacterial, anti-inflammatory, and anticancer activities. In this study, an alternative cost-effective uridine diphosphate (UDP) recycling system was established to produce UDP-α-D-glucose through a two-step enzyme-catalyzed reaction using easily available cheap sources.

Nephroprotection of plantamajoside in rats treated with cadmium.

Cadmium (Cd), an environmental and industrial pollutant, generates free radicals responsible for oxidative stress. Cd can also lead to various renal toxic damage such as the proximal tubules and glomerulus dysfunction. Plantamajoside (PMS), a major compound of Plantago asiatica (PA), was reported to have the antioxidant effects.