Search Results - "Geoghegan, Mark"

Effect of Salt on Phosphorylcholine-based Zwitterionic Polymer Brushes by Zhang, Zhenyu, Moxey, Mark, Alswieleh, Abdullah, Morse, Andrew J., Lewis, Andrew L., Geoghegan, Mark, Leggett, Graham J.

“…A quantitative investigation of the responses of surface-grown biocompatible brushes of poly­(2-(methacryloyloxy)­ethyl phosphorylcholine) (PMPC) to different…”
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Optical Gain in Semiconducting Polymer Nano and Mesoparticles by Geoghegan, Mark, Mróz, Marta M, Botta, Chiara, Parrenin, Laurie, Brochon, Cyril, Cloutet, Eric, Pavlopoulou, Eleni, Hadziioannou, Georges, Virgili, Tersilla

“…The presence of excited-states and charge-separated species was identified through UV and visible laser pump and visible/near-infrared probe femtosecond…”
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Effect of Brush Thickness and Solvent Composition on the Friction Force Response of Poly(2-(methacryloyloxy)ethylphosphorylcholine) Brushes by Zhang, Zhenyu, Morse, Andrew J, Armes, Steven P, Lewis, Andrew L, Geoghegan, Mark, Leggett, Graham J

“…The frictional properties of poly(2-(methacryloyloxy)ethylphosphorylcholine) (PMPC) brushes grown from planar silicon surfaces by atom transfer radical…”
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Optimization of the Bulk Heterojunction Composition for Enhanced Photovoltaic Properties: Correlation between the Molecular Weight of the Semiconducting Polymer and Device Performance by Nicolet, Célia, Deribew, Dargie, Renaud, Cedric, Fleury, Guillaume, Brochon, Cyril, Cloutet, Eric, Vignau, Laurence, Wantz, Guillaume, Cramail, Henri, Geoghegan, Mark, Hadziioannou, Georges

“…Herein we propose an approach toward the optimization of the photovoltaic performance of bulk heterojunctions by tuning the composition of the active layer…”
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Nanoscale Contact Mechanics of Biocompatible Polyzwitterionic Brushes by Zhang, Zhenyu, Morse, Andrew J, Armes, Steven P, Lewis, Andrew L, Geoghegan, Mark, Leggett, Graham J

“…Friction force microscopy has been used to demonstrate that biocompatible, lubricious poly(2-(methacryloyloxy)ethylphosphorylcholine) (PMPC) brushes exhibit…”
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Conformation of Poly(methacrylic acid) Chains in Dilute Aqueous Solution by Ruiz-Pérez, Lorena, Pryke, Andrew, Sommer, Michael, Battaglia, Giuseppe, Soutar, Ian, Swanson, Linda, Geoghegan, Mark

“…Poly(methacrylic acid) (PMAA) undergoes a conformational transition between pH 4 and 6 from a hypercoiled structure to a water-swollen state. There has been…”
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Frictional properties of a polycationic brush by Raftari, Maryam, Zhang, Zhenyu, Carter, Steven R, Leggett, Graham J, Geoghegan, Mark

“…The frictional behaviour of end-grafted poly[2-(dimethyl amino)ethyl methacrylate] films (brushes) has been shown by friction force microscopy to be a strong…”
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Weak polyelectrolyte brushes by Geoghegan, Mark

“…I review experimental developments in the growth and application of surface-grafted weak polyelectrolytes (brushes), concentrating on their surface,…”
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Single Macromolecule Diffusion in Confined Environments by Mears, Matthew, Tarmey, Drew S., Geoghegan, Mark

“…We consider the behaviour of single molecules on surfaces and, more generally, in confined environments. These are loosely split into three sections: single…”
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Size-Dependent Photophysical Behavior of Low Bandgap Semiconducting Polymer Particles by Virgili, Tersilla, Botta, Chiara, Mróz, Marta M, Parrenin, Laurie, Brochon, Cyril, Cloutet, Eric, Pavlopoulou, Eleni, Hadziioannou, Georges, Geoghegan, Mark

“…The photophysics of water and propan-1-ol suspensions of poly [N-9"-heptadecanyl-2,7-carbazole- -5,5-(4,7-di-2-thienyl-2',1',3'- benzothiadiazole)] (PCDTBT)…”
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Controlling Network-Brush Interactions to Achieve Switchable Adhesion by La Spina, Rita, Tomlinson, Michael R, Ruiz-Pérez, Lorena, Chiche, Arnaud, Langridge, Sean, Geoghegan, Mark

“…Make up and break up: A pH‐responsive system that displays switchable adhesion in situ is described. Polyacid gels and polybases grafted to a substrate…”
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Thermally responsive polymeric hydrogel brushes: synthesis, physical properties and use for the culture of chondrocytes by Collett, John, Crawford, Aileen, Hatton, Paul V, Geoghegan, Mark, Rimmer, Stephen

“…-isopropyl acrylamide) (polyNIPAM), as the graft component we are able to maintain the critical solution temperature (…”
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The swelling of weak polyelectrolytes at low salt concentrations in dilute solution by Geoghegan, Mark

“…The possibility of swelling of single polyelectrolyte chains in dilute aqueous solution by free ions in the presence of a small amount of salt is investigated…”
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Adhesive Interfaces toward a Zero-Waste Industry by Sierra-Romero, Adriana, Novakovic, Katarina, Geoghegan, Mark

“…This Feature Article evaluates ongoing efforts to adapt adhesives toward the goal of zero-waste living and suggests the most promising future directions…”
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Kinetics of Surface Crystallization in Thin Films of Poly(ethylene terephthalate) by Jukes, Paul C, Das, Arindam, Durell, Martin, Trolley, Dean, Higgins, Anthony M, Geoghegan, Mark, Macdonald, J. Emyr, Jones, Richard A. L, Brown, Simon, Thompson, Paul

“…In-situ grazing incidence X-ray diffraction has been used to investigate the kinetics of crystallization at the surface of thin films of poly(ethylene…”
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Bullying in physics affects us all by Hemingway, Marie, Geoghegan, Mark

“…Marie Hemingway and Mark Geoghegan say that physics can only be more inclusive and welcoming if agreements that stop people speaking out about harassment and…”
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Block Copolymer Adsorption from a Homopolymer Melt to Silicon Oxide:  Effects of Nonadsorbing Block Length and Anchoring Block−Substrate Interaction by Costa, Ana Claudia, Geoghegan, Mark, Vlček, Petr, Composto, Russell J

“…The adsorption of block copolymers from a homopolymer matrix is studied as a function of nonadsorbing block length and adsorbing block type. The copolymers are…”
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Inside Cover: A reversible water‐based electrostatic adhesive (Angew. Chem. Int. Ed. 2/2024) by Sierra‐Romero, Adriana, Novakovic, Katarina, Geoghegan, Mark

“…Complementary aqueous emulsions stabilized by oppositely charged polyelectrolytes form films that adhere many plastic and other surfaces well. However, at both…”
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Determination of the rate-dependent adhesion of polydimethylsiloxane using an atomic force microscope by Petroli, Alessandra, Petroli, Mario, Romagnoli, Marcello, Geoghegan, Mark

“…A JKR (Johnson-Kendall-Roberts) formalism is used to extract the Young modulus, the contact radius, and the energy release rate simply from the retraction…”
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A reversible water‐based electrostatic adhesive by Sierra‐Romero, Adriana, Novakovic, Katarina, Geoghegan, Mark

“…Commercial adhesives typically fall into two categories: structural or pressure sensitive. Structural glues rely on covalent bonds formed during curing and…”
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