Cleveland, Thomas E.; He, Wei; Evans, Angela C.; Fischer, Nicholas O.; Lau, Edmond Y.; Coleman, Matthew A.; Butler, Paul
Small-angle X-ray and neutron scattering demonstrates that cell-free expression produces properly formed disc-shaped nanolipoprotein particles
Nanolipoprotein particles (NLPs), composed of membrane scaffold proteins and lipids, have been used to support membrane proteins in a native-like bilayer environment for biochemical and structural studies. Traditionally, these NLPs have been prepared by the controlled removal of detergent from a detergent-solubilized protein-lipid mixture. Recently, an alternative method has been…
Synthesis and comparison of mesomorphic behaviour of a cholesterol-based liquid crystal dimer and analogous monomers
Champagne, Pier-Luc; Ester, David; Aldosari, Salem; Williams, Vance E.; Ling, Chang-Chun
Oligo/polymerisation of known mesogens constitutes a highly efficient strategy in liquid crystal research due to its potential to generate novel liquid crystal materials with intriguing mesomorphic properties. Here we report the synthesis and comparative studies of a synthetic liquid crystal dimer and two of its monomer analogues. By incorporating cholesterol…
Influence of electron-induced reactive processing on structure, morphology and nano-mechanical properties of polyamide 6/fluoroelastomer blends
Banerjee, Shib Shankar; Janke, Andreas; Jehnichen, Dieter; Gohs, Uwe; Heinrich, Gert
Electron-induced reactive processing (EIReP) is a sustainable and energy effective processing technology to modify polymeric materials in the molten state by its spatial and temporal precise energy input. In the present research, the influence of EIReP on nano-mechanical properties of polyamide 6 (PA6)/fluoroelastomer (FKM) blends (50/50 w/w) was successfully explored…
Influence of Extensional Stress Overshoot on Crystallization of LDPE
Wingstrand, Sara Lindeblad; van Drongelen, Martin; Mortensen, Kell; Graham, Richard S.; Huang, Qian; Hassager, Ole
Low-density polyethylene (LDPE) shows a stress overshoot in start-up of strong uniaxial extensional flows of constant rate. It is believed that the overshoot is caused by a contraction of the polymer backbone due to alignment of the long chain branches—the consequence being that the molecular strain of the backbone does…
Improving Faraday rotation performance with block copolymer and FePt nanoparticle magneto-optical composite
Miles, Alexander; Gai, Yue; Gangopadhyay, Palash; Wang, Xinyu; Norwood, Robert A.; Watkins, James J.
Magneto-optical (MO) composites with excellent Faraday rotation (FR) response were fabricated using iron platinum (FePt) nanoparticles (NPs) and polystyrene-block-poly (2-vinyl pyridine) (PS-b-P2VP) block copolymers (BCPs). Gallic acid functionalized FePt NPs with average core diameters (dcore) of 1.9, 4.9, 5.7 and 9.3 nm have been selectively incorporated into a P2VP domain…
A comparative study of anion-exchange membranes tethered with different hetero-cycloaliphatic quaternary ammonium hydroxides
Dang, Hai-Son; Jannasch, Patric
Journal of Materials Chemistry A, 2017, vol 5, 41, pp. 21965-21978DOI:10.1039/C7TA06029GVisit the full articleBack to the overview
Successful reprogramming of cellular protein production through mRNA delivered by functionalized lipid nanoparticles
Arteta, Marianna Yanez; Kjellman, Tomas; Bartesaghi, Stefano; Wallin, Simonetta; Wu, Xiaoqiu; Kvist, Alexander J.; Dabkowska, Aleksandra; Székely, Noémi; Radulescu, Aurel; Bergenholtz, Johan; Lindfors, Lennart
The development of safe and efficacious gene vectors has limited greatly the potential for therapeutic treatments based on messenger RNA (mRNA). Lipid nanoparticles (LNPs) formed by an ionizable cationic lipid (here DLin-MC3-DMA), helper lipids (distearoylphosphatidylcholine, DSPC, and cholesterol), and a poly(ethylene glycol) (PEG) lipid have been identified as very promising…
Mesostructure of Mesoporous Silica/Anodic Alumina Hierarchical Membranes Tuned with Ethanol
Meoto, Silo; Kent, Niall; Nigra, Michael M.; Coppens, Marc-Olivier
Hierarchically structured membranes composed of mesoporous silica embedded inside the channels of anodic alumina (MS-AAM) were synthesized using the aspiration method. Ethanol is shown to have a significant effect on the type and organization of the mesoporous silica phase. Detailed textural analysis revealed that the pore size distribution of the…
Characterization of Monoclonal Antibody–Protein Antigen Complexes Using Small-Angle Scattering and Molecular Modeling
Castellanos, Maria Monica; Snyder, James A.; Lee, Melody; Chakravarthy, Srinivas; Clark, Nicholas J.; McAuley, Arnold; Curtis, Joseph E.
The determination of monoclonal antibody interactions with protein antigens in solution can lead to important insights guiding physical characterization and molecular engineering of therapeutic targets. We used small-angle scattering (SAS) combined with size-exclusion multi-angle light scattering high-performance liquid chromatography to obtain monodisperse samples with defined stoichiometry to…
Chiral Arrangements of Au Nanoparticles with Prescribed Handedness Templated by Helical Pores in Block Copolymer Films
Lu, Xuemin; Song, Dong-po; Ribbe, Alexander; Watkins, James J.
Fabrication of films with plasmonic nanoparticles (NPs) arrays arranged in chiral configurations of prescribed handedness is highly attractive for the design of new functional materials; however, this remains a formidable challenge in nanotechnology. In this study, we demonstrated the controlled arrangements of gold (Au) NPs into helical structures templated by…