Synthetic polymers typically adopt a random-coil conformation in solution primarily driven by the tendency to maximize entropy. Generation of well-defined secondary structures in synthetic polymers, therefore, will need to include specific intrachain intersegment interactions that will provide adequate enthalpic contribution to overcome this entropic penalty associated with the formation of wel...

Cationic poly-N,N-dimethylfulleropyrrolidinium derivatives have been designed and synthesised to complex plasmid DNA for gene delivery.

Host-guest complexation between pillararene trimer 1 and biviologen 2 was used to fabricate the dynamic supramolecular self-assembly, which exhibits a reversible multidimensional transformation from 0D to 3D upon concentration changes. As a comparison, assemblies built by the complexation between 1,4-dimethoxypillar[5]arene and 2 only show spherical morphology under similar conditions.

The choice of the functional monomer is a key point in design molecularly imprinted polymers (MIPs) because its directional interactions with template molecules are required to form molecular imprints acting as selective recognition sites for adsorption. Methacrylic acid (MAA) has very often been employed imprinting basic molecules. Strong acid-base lead H+ transfer and weak hydrogen bonding be...

Tightening quality standards for European waters has seen a move towards enhanced wastewater treatment technologies such as granulated organic carbon treatment and ozonation. Although these technologies are likely to be successful in degrading certain micro-organic contaminants, these may also destroy compounds which would otherwise complex and render metals significantly less toxic. This study...

Article history: Received on: 07/09/2013 Revised on: 19/09/2013 Accepted on: 23/11/2013 Available online: 29/11/2013 This work presents two simple and direct spectrophotometric methods for determination of rabeprazole sodium (RB) through charge transfer complexation reactions. The first method is based on the reaction of the drug with p-chloranilic acid (p-CA) in acetonitrile to give a red colo...

Common methods for fabrication of polyelectrolyte microcapsules rely on a multi-step process. We propose a single-step approach to generate polyelectrolyte microcapsules with 1-2 μm shells based on polyelectrolyte complexation across a water/oil droplet interface and study the effect of parameters controlling the polyelectrolyte complexation on shell thickness.

In this work we report the structural liposome modifications during DNA complexation using Small Angle X-ray Scattering (SAXS) technique. We obtained in situ complexation using an in line microchannel SAXS sample holder coupled to a fed-batch reactor and thus we were able to determine the electronic density profile and other liposome parameters in the presence of DNA.

The first supramolecular star polymer based on pseudorotaxane host-guest complexation was prepared from statistical complexation of a homotritopic tris(crown ether) host and monotopic paraquat-terminated polystyrene guest in solution. The formation of this supramolecular star polymer was confirmed by proton NMR characterization and viscosity studies.