Fortin, Patrick; Rajasekar, Subash; Chowdhury, Pankaj; Holdcroft, Steven
Hydrogen evolution at conjugated polymer nanoparticle electrodes
Organic polymer nanoparticles have been gaining attention in photovoltaics as a means to control the morphology of polymer composite films for the purpose of studying bulk heterojunction, photoactive layers. This work investigates the preparation of nanostructured organic thin films from P3HT:PC61BM nanoparticles and their characterization as photoelectrodes for the photoelectrochemical…
Characterization of the NISTmAb Reference Material using small-angle scattering and molecular simulation : Part II: Concentrated protein solutions.
Castellanos, M. M.; Mattison, K.; Krueger, S.; Curtis, J. E.
Abstract: Protein-protein interactions in monoclonal antibody solutions are important for the stability of a therapeutic drug and directly…
Potential enthalpic energy of water in oils exploited to control supramolecular structure
Zee, Nathan J. Van; Adelizzi, Beatrice; Mabesoone, Mathijs F. J.; Meng, Xiao; Aloi, Antonio; Zha, R. Helen; Lutz, Martin; Filot, Ivo A. W.; Palmans, Anja R. A.; Meijer, E. W.
Nature, 2018, vol 558, 7708, pp. 100-103DOI:10.1038/s41586-018-0169-0Visit the full articleBack to the overview
Switchable Charge Injection Barrier in an Organic Supramolecular Semiconductor
Gorbunov, Andrey V.; Haedler, Andreas T.; Putzeys, Tristan; Zha, R. Helen; Schmidt, Hans-Werner; Kivala, Milan; Urbanavičiu̅tė, Indre; Wübbenhorst, Michael; Meijer, E. W.; Kemerink, Martijn
We disclose a supramolecular material that combines semiconducting and dipolar functionalities. The material consists of a discotic semiconducting carbonyl-bridged triarylamine core, which is surrounded by three dipolar amide groups. In thin films, the material self-organizes in a hexagonal columnar fashion through π-stacking of the molecular core and hydrogen bonding between…
Nanosheets of Nonlayered Aluminum Metal–Organic Frameworks through a Surfactant-Assisted Method
Pustovarenko, Alexey; Goesten, Maarten G.; Sachdeva, Sumit; Shan, Meixia; Amghouz, Zakariae; Belmabkhout, Youssef; Dikhtiarenko, Alla; Rodenas, Tania; Keskin, Damla; Voets, Ilja K.; Weckhuysen, Bert M.; Eddaoudi, Mohamed; Smet, Louis C. P. M. de; Sudhölter, Ernst J. R.; Kapteijn, Freek; Seoane, Beatriz; Gascon, Jorge
During the last decade, the synthesis and application of metal–organic framework (MOF) nanosheets has received growing interest, showing unique performances for different technological applications. Despite the potential of this type of nanolamellar materials, the synthetic routes developed so far are restricted to MOFs possessing layered structures, limiting further development in…
On cellulose dissolution and aggregation in aqueous tetrabutylammonium hydroxide
Gubitosi, Marta; Duarte, Hugo; Gentile, Luigi; Olsson, Ulf; Medronho, Bruno
Aqueous tetrabutylammonium hydroxide, TBAH(aq), has been found to dissolve cellulose and to be a potential solvent for chemical processing or fiber spinning. In this paper, we have investigated the dissolution state of cellulose in 40 wt % TBAH(aq) solvent, and present an extensive study of rheology, combined with static light…
Smectic liquid crystal Schlieren texture in rapidly cooled poly(butylene naphthalate)
Ding, Qian; Jehnichen, Dieter; Göbel, Michael; Soccio, Michelina; Lotti, Nadia; Cavallo, Dario; Androsch, René
The morphology of partially crystalline/ordered poly(butylene naphthalate) (PBN) forming on cooling the melt has been analyzed by polarized-light optical microscopy (POM) and microfocus-beam X-ray diffraction (XRD). Crystallization at rather low supercooling of the melt, at temperatures higher than about 200 °C, leads to slow and irregular spherulitic growth of β′-crystals, with…
Extensional Strain Hardening Induced by $ensuremath{pi}text{ensuremath{-}}ensuremath{pi}$ Interactions in Barely Entangled Polymer Chains: The Curious Case of Poly(4-vinylbiphenyl)
López-Barrón, Carlos R.; Zhou, Huaxing
Aromatic π−π interactions between phenyl groups of adjacent chains in poly(4-vinylbiphenyl) (PVBP) have profound effects on the dynamics of this polymer. We report two unexpected nonlinear viscoelastic responses of PVBP when subjected to uniaxial flow. One is the unprecedented observation of extensional strain hardening (SH) in a barely entangled polymer…
Microemulsions as Potential Carriers of Nisin: Effect of Composition on Structure and Efficacy
Chatzidaki, Maria D.; Papadimitriou, Konstantinos; Alexandraki, Voula; Tsirvouli, Eirini; Chakim, Zena; Ghazal, Aghiad; Mortensen, Kell; Yaghmur, Anan; Salentinig, Stefan; Papadimitriou, Vassiliki; Tsakalidou, Effie; Xenakis, Aristotelis
Water-in-oil (W/O) microemulsions based on either refined olive oil (ROO) or sunflower oil (SO), distilled monoglycerides (DMG), and ethanol were used as nisin carriers in order to ensure its effectiveness as a biopreservative. This work presents experimental evidence on the effects of ethanol concentration, hydration, the nature of oil, and…
Immune responses induced by nano-self-assembled lipid adjuvants based on a monomycoloyl glycerol analogue after vaccination with the Chlamydia trachomatis major outer membrane protein
Rodrigues, Letícia; Raftopoulos, Konstantinos N.; Tandrup Schmidt, Signe; Schneider, Fabian; Dietz, Hendrik; Rades, Thomas; Franzyk, Henrik; Pedersen, Anders Elm; Papadakis, Christine M.; Christensen, Dennis; Winter, Gerhard; Foged, Camilla; Hubert, Madlen
Nanocarriers based on inverse hexagonal liquid crystalline phases (hexosomes) show promising potential as vaccine delivery systems. Their unique internal structure, composed of both lipophilic domains and water-containing channels, renders them capable of accommodating immunopotentiating compounds and antigens. However, their adjuvant properties are poorly understood. We hypothesized that the…