A novel and versatile DNA packaging approach was developed by grafting DNA-binding oligopeptides onto a polymer scaffold to combinatively self-assemble with DNA into compact nanostructures.

Orthogonal polymer brush gradients are assemblies of surfaceanchored macromolecules, in which two material properties of the grafted chains (e.g., grafting density, molecular weight) vary independently in orthogonal directions. Here, we describe the formation and applications of two such orthogonal assemblies, involving: (1) molecular weight and grafting density (MW/r) gradients of a given poly...

Specifically, we will show that polymer assemblies with a gradually increasing grafting density can be utilized to probe the “mushroom”-to-“bush” conformational transition in both neutral polymer brushes as well as weak surface-anchored polyelectrolytes. We will describe a method for generating polymer assemblies with a gradually changing molecular weight of the grafted polymers. A simple exten...

We designed and synthesized a single polymer with TADF characteristics by grafting the TADF emitter, 10-(4-(5-phenyl-1,3,4-oxadiazol-2-yl)phenyl)-10H-phenoxazine, onto the side chain of the polymer backbone of polycarbazole. Employing these copolymers as emitting layers, an efficient bluish-green polymer LED with a maximum external quantum efficiency of 4.3% was achieved, corresponding to a hig...

Multi-walled carbon nanotubes (MWNTs) have been successfully modified by polystyrene, poly( caprolactone), and their block copolymers by addition reaction of the alkoxyamine-terminated precursors. Polymer-modified MWNTs are easily dispersed in good solvents for the grafted polymer, such as toluene and THF. This observation has been confirmed by TEM analysis. The grafting ratio of polystyrene ch...

An unprecedented one-pot procedure employing a cyclopentadienyl functionalized RAFT agent allowed the grafting of poly(carboxybetaine acrylamide) - a highly functional and biocompatible polymer - from the surface of pristine SWCNTs. The pendant carboxylic acid groups of the surface grafted polymer were further conjugated with single-stranded (ss)-DNA, which was successfully hybridized with a Cy...

Phosphate groups chemically grafted onto polymer substrates can be used as biomimetic analogs for in vitro studying of function of biomacromolecules and also as tissue substitutes in clinical conditions of organ loss. Despite this inspiration, studies correlating effect of degree of phosphate grafting of a polymer on fabrication and biological properties of polymers are lacking. In this work, N...

the aim of the research work was to chemically modify guar gum(gg) as a ph sensitive co-polymer and formulating intestinal targeting eso nanoparticles (nps) using the synthesized co-polymer. poly acrylamide-grafted-guar gum (paam-g-gg) co-polymer was synthesized by free radical polymerization. chemical modification of paam-g-gg by alkaline hydrolysis results in formation of a ph-sensitive co-po...

Environmentally responsive poly(N-isopropylacrylamide) brushes were grafted from the surface of polymer particles or flat surfaces in order to generate reversible hydrophilic and hydrophobic surfaces. The use of atom transfer radical polymerization was demonstrated for the grafting of polymer brushes as it allows efficient control on the amount of grafted polymer. The polymer particles were gen...

It is discovered that the negative effects on OER activity caused by stabilization of NPs with surface-capping polymers can be mitigated decreasing grafting density or increasing hydrophilicity polymer chains.