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Molecular architecture of novel, trichain-containing vectors for gene delivery
We have recently developed novel ternary lipopolyplex vectors (i.e. gene delivery vectors containing cationic lipid, plasmid DNA and a cationic peptide) in which, for the first... -
Effect of serum on the structure of gene delivery vehicles
To date complexes prepared from vesicles composed of dichain, cationic lipids (L) with negatively charged DNA (D), known as LD complexes have emerged as one of the major... -
Probing the kinetics of the formation of lipid, peptide and DNA/siRNA complex...
Complexes prepared from cationic, dichain lipid (L) vesicles, positively chargely targeting peptides (P) and negatively charged DNA (D) or siRNA (R), known as LPDs and LPRs... -
A structural evolution: hydrotrope-alkyl hydrotrope-surfactant
The aim of the proposal is to improve understanding about combinations of normal surfactants and hydrotropes. The systems of study are reference oil-water interfaces, provided... -
Bi-disperse colloids: silica and microemulsions
Surprisingly little work has been done to gain understanding about the nature, stability and properties of nanoparticles dispersed in organic solvents (organosols). Recently... -
Gold-loaded microgels
Recent results show that gold nanoparticles (Au-NPs) can be included into microgels (MGs). UV-visible spectra (Figure 1) suggest the original Au-NP sols retain their size and... -
Opening up microemulsion phases in CO2
New types of water-in-CO2 microemulsions using mixed surfactant systems will be investigated by high-pressure SANS (HP-SANS). Exciting new results (see report on RB820030) have... -
Probing the internal structure of gene delivery vehicles using contrast varia...
Gene delivery vehicles, known as LPD complexes, prepared from mixing cationic lipid vesicles (L) with cationic peptide (P) and DNA (D) have proven to be very effective at... -
Viscosity modifiers for CO2
There is a well-documented track record of research into water-in-CO2 (w/c) microemulsions. Using newly discovered CO2 compatible surfactants, the next step is to explore... -
Close control over microemulsion stability using blended solvents
The aim of this proposal is to investigate a novel approach to phase separation in microemulsions using careful choice of organic solvents, and appropriate mixtures.... -
Organogels for applications in CO2
This proposal aims to explore organogel systems, like those recently decsribed1-3, but made from new CO2 philic surfactant-gelators. These have been synthesised to feature... -
Polymer-induced critical pase separation
This proposal concerns a novel approach to phase separation in self-assembling colloidal systems. Microemulsions can be readily formulated to display critical-type phase... -
Structure of siRNA containing delivery vehicles: effect of serum
Complexes prepared from cationic, dichain lipid (L) vesicles and negatively charged siRNA (R), with and without positively chargely targeting peptides (P) known as LR or LPR... -
Gels in CO2
The proposal aims to explore different self-assembly structures in CO2 with the focus of developing viscosity modifiers for supercritical CO2 (sc-CO2). This is part of a... -
Aggregation in ionic liquids
The aim of this experiment is to investigate surfactant aggregation in ionic liquids and also ionic liquid ¿ oil and ionic liquid ¿ water microemulsions via SANS. Contrast... -
New CO2-philic surfactants
The proposal aims to explore water-in-CO2 (w/c) microemulsions with new, very promising hydrocarbon surfactants. The compounds are generated using standard chemistry1 but with... -
Multi-catalyst ensembles - aggregation structure and selectivity
There is exciting potential for SANS to resolve an important problem in homogeneous catalyst chemistry. The Pd-chiral catalyst 1+ below has significant pan-industrial potential... -
Surface layers in organosols
This research project addresses an overlooked, but fundamental issue of colloid science: surfactant adsorption dynamics at nanoparticle-organosolvent interfaces. Adsorption of... -
Surface structure of monolayers formed by novel di- and tri-chain cationic li...
The aim of the present study is to the determine, using specular neutron reflection (SNR), the structure of layers formed by novel tri-chain cationic lipids in combination with...