A5058458152- Microfluidic and Capillary Electrophoresis Applications
- Analytical Chemistry and Chromatography
- Innovative Microfluidic and Catalytic Techniques Innovation
- Analytical Chemistry and Sensors
- Analytical chemistry methods development
- Mass Spectrometry Techniques and Applications
- Advanced Chemical Sensor Technologies
- Microfluidic and Bio-sensing Technologies
- Electrochemical sensors and biosensors
- Electrochemical Analysis and Applications
- Electron and X-Ray Spectroscopy Techniques
- Polymer Surface Interaction Studies
- Proteins in Food Systems
- Surfactants and Colloidal Systems
- Non-Destructive Testing Techniques
- Protein purification and stability
- Pickering emulsions and particle stabilization
- Water Quality Monitoring and Analysis
- Glycosylation and Glycoproteins Research
- Fuel Cells and Related Materials
- Chemical and Physical Properties in Aqueous Solutions
- Folate and B Vitamins Research
- Nanomaterials for catalytic reactions
- Conducting polymers and applications
- Acoustic Wave Resonator Technologies
Virginia Commonwealth University
2025
Waterford Institute of Technology
2013-2019
Waterford Institute
2015-2019
22q11 Ireland
2017
Dublin City University
2002-2016
Babcock & Wilcox (United States)
1995
Gold nanoparticles have been immobilised on a methacrylate monolith via grafted polymer chains terminated with amine groups, resulting in homogenous and dense surface coverage.
The in situ preparation of ethylene dimethacrylate porous polymer monoliths within 20 μL polypropylene pipette tips, bound via surface grafted methacrylate anchor sites, is reported. Gold nano-particles (AuNPs) were immobilised onto the monolith pore utilising azlactone chemistry and coverage verified using field emission scanning electron microscopy. Erythrina cristagalli lectin (ECL) was upon attached AuNPs a bio-functional linker. ECL-modified tip successfully applied for enrichment...
Quinine is known for treating malaria, muscle cramps, and, more recently, has been used as an additive in tonic water due to its bitter taste. However, it was shown that excessive consumption of quinine can have severe side effects on health. In this work, we utilized fluorescence spectroscopy measure the concentration commercial samples. An external standard method calculate concentrations two commercially available brands, namely Canada Dry and Schweppes, compare them maximum allowable...
The effect of the water concentration on quantitation formate from dimethylformamide in presence electron-donating bases using ion chromatography is reported. This observation has important implications area photocatalytic reduction CO2, where levels are often used to calculate catalyst turnover numbers.
Short permanently coated reversed-phase silica based monolithic columns have been investigated for the rapid separation of inorganic anions and cations. One 2.5 x 0.46 cm column was with didodecyldimethylammonium (DDAB), anion analysis; a second 5.0 dioctylsulphosuccinnate (DOSS), cation analysis. The use single combined eluent mM phthalate/1.5 ethylenediamine, at flow rates between 4.0 8.0 mL/min, resulted in 8 (in under 100 s) 5 cations on above when used individually, detection limits...
A capacitively-coupled contactless conductivity detector (C4D) has been utilised as an on-capillary within a capillary ion chromatograph, incorporating reversed-phase monolithic silica column semi-permanently modified with suitable ionic surfactant. The (150 x 0.1 mm i.d.) was using sodium dioctyl sulfosuccinate (DOSS), anionic surfactant, for the separation of small inorganic and organic cations. With use detector, longitudinal homogeneity temporal stability coating were investigated....
Capacitively coupled contactless conductivity detection (C4D) is presented as a novel and versatile means of visualising discrete zones charged functional groups grafted onto polymer based monoliths. Monoliths were first formed within 100 microm UV-transparent fused silica capillaries. Photografting methods subsequently used to graft monomer, 2-acrylamido-2-methyl-1-propanesulfonic acid, regions the monolith using photomask. Post-modification evaluation involves scanning C4D detector along...
A robust, compact, on-chip, electro-osmotic micro-pump (EOP) for micro-flow analysis, based on parallel, encased, 10 x 0.1 mm I.D. monolithic silica capillary columns has been developed. 15 40 2 poly(methyl methacrylate) (PMMA) chip, containing a total of nine parallel EOP systems was fabricated, allowing the use single, double or triple to produce increased flow as required. The compatible with both aqueous and organic solvents without swelling shrinking problems, column capable generating...
Polymeric monoliths in capillary formats have been fabricated incorporating a gradient of charged functional groups along their length. Scanning capacitively coupled contactless conductivity detection (sC(4)D) was then used to measure the conductive response stationary phase and characterise relative axial distribution column Gradients 2-acrylamido-2-methyl-1-propanesulphonic acid were prepared using either photografting methods or by filling with segmented plugs monomer mixtures each...
A new direct contact platform for capillary column precise temperature control based upon the use of individually controlled sequentially aligned Peltier thermoelectric units is presented. The provides rapid and microbore liquid chromatography columns allows simultaneous temporal spatial programming. operating range was between 15 200 °C each 10 units, with a ramp rate approximately 400 °C/min. system evaluated number nonstandard applications, such as application gradients both linear...
A glycidyl methacrylate-co-ethylene dimethacrylate monolith in capillary format (100 microm/id) has been grafted with chains of poly([2(methacryloyloxy)ethyl] trimethylammonium chloride (poly-META) and applied to the ion-chromatographic separation selected inorganic anions. Grafting META onto generic monolithic scaffold resulted a 'electrolyte responsive flow permeability', which manifested as increased permeability presence electrolyte solutions. Using an eluent 2 mM sodium benzoate...