Results 51 to 60 of about 843,478 (179)

Bulk Heterojunction versus Diffused Bilayer: The Role of Device Geometry in Solution p-Doped Polymer-Based Solar Cells [PDF]

open access: yes, 2012
We exploit the effect of molecular p-type doping of P3HT in diffused bilayer (DB) polymer solar cells. In this alternative device geometry, the p-doping is accomplished in solution by blending the F4-TCNQ with P3HT.
Gigli, Giuseppe   +3 more
core   +1 more source

Supramolecular fabrication of hyperbranched polyethyleneimine toward nanofiltration membrane for efficient wastewater purification

open access: yesSusMat, 2021
Nanofiltration technology has opened an efficient pathway to addressing the grand issue of wastewater purification. Polyethyleneimine (PEI), as a hydrophilic polymer, is a promising material to manufacture separation membranes owing to its superiority ...
Junyuan Xia   +5 more
doaj   +1 more source

Molecular Release Behavior of Core-shell Type Hyperbranched Polymer [PDF]

open access: yes, 2007
Polyglycerol-polyethylene imine (PGL-PEI) was synthesized from glycidol and polyethylene imine (PEI) as a core-shell type hyperbranched polymer. PGL-PEI was characterized by 1H, 13C nuclear magnetic resonance (1H, 13C-NMR) spectroscopy, gel permeation ...
本九町, 卓   +3 more
core  

In situ supramolecular polymerization-enhanced self-assembly of polymer vesicles for highly efficient photothermal therapy

open access: yesNature Communications, 2020
Photothermal therapy (PTT) has recently emerged as a promising approach for cancer therapy. Here, the authors report a hyperbranched polymer vesicle with favorable photothermal stability and high photothermal efficiency for PTT through a supramolecular ...
Yannan Liu   +10 more
doaj   +1 more source

Investigation on the Mechanism and Properties of a Novel Colloidal Dispersion Gel for Profile Modification in High Salinity Reservoir

open access: yesLithosphere, 2022
A novel colloidal dispersion gel (CDG) was synthesized by cross-linking polysaccharide-based hyperbranched polymer (SMHBP) with aluminum citrate. Four factors affecting gelation properties were investigated including SMHBP concentration, the weight ratio
Yuhu Bai   +4 more
doaj   +1 more source

Investigating the role of polymer size on ionic conductivity in free-standing hyperbranched polyelectrolyte membranes

open access: yes, 2021
Polymer-based ion exchange membranes (IEMs) are utilized for many applications such as in water desalination, energy storage, fuel cells and in electrophoretic drug delivery devices, exemplified by the organic electronic ion pump (OEIP).
Berggren, Magnus,   +21 more
core   +1 more source

Preparation of Functional Long‐Subchain Hyperbranched Polystyrenes via Post‐polymerization Modification: Study on the Critical Role of Chemical Stability of Branching Linkage

open access: yesChemistryOpen, 2020
Post‐polymerization modification (PPM) is one of the most powerful strategy for preparing polymers with functional groups that cannot be synthesized by direct polymerization.
Mo Zhu   +4 more
doaj   +1 more source

Hyperbranch-Crosslinked S-SEBS Block Copolymer Membranes for Desalination by Pervaporation

open access: yesMembranes, 2020
Sulfonated aromatic polymer (SAP) featuring hydrophilic nanochannels for water transport is a promising membrane material for desalination. SAPs with a high sulfonation degree favor water transport but suffer from reduced mechanical strength and membrane
Mengyu Yan   +6 more
doaj   +1 more source

Hyperbranched poly‐L‐lysine surface‐engineered bioprosthetic heart valves with anti‐calcification, anti‐infection, and durability

open access: yesBMEMat, EarlyView.
The challenges of bioprosthetic heart valves (BHV) with respect to calcification, infection, and poor durability are tackled by surface engineering of hyperbranched poly‐L‐lysine (HBPL), providing a translational solution to improve long‐term valve performance.
Pai Peng   +7 more
wiley   +1 more source

Adsorption Kinetics of Polymer/Surfactant Mixtures at an Expanding Air/Water Interface [PDF]

open access: yes, 2013
The dynamic adsorption mechanisms of a range of polymer/surfactant mixtures have been studied at the expanding air/water interface created by an overflowing cylinder.
ANGUS-SMYTH, ANNA
core  

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