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Morphology of Anion-Conducting Ionenes Investigated by X-ray Scattering and Simulation

Schibli, Eric M.; Wright, Andrew G.; Holdcroft, Steven; Frisken, Barbara J.

Customer publications

Morphology of Anion-Conducting Ionenes Investigated by X-ray Scattering and Simulation

Schibli, Eric M.; Wright, Andrew G.; Holdcroft, Steven; Frisken, Barbara J.

We have studied the morphology of a novel series of benzimidazole-based ionenes, methylated poly(hexamethyl-p-terphenylbenzimidazolium) (HMT-PMBI), in halide form. Materials with anion-exchange capacities ranging from 0 to 2.5 mequiv/g were studied. X-ray scattering reveals three length scales in the materials: ion–polymer spacing (4 Å), polymer–polymer interchain spacing (6 Å), and an…
Influence of Solvent Additive 1,8-Octanedithiol on P3HT:PCBM Solar Cells

Wang, Weijia; Song, Lin; Magerl, David; González, Daniel Moseguí; Körstgens, Volker; Philipp, Martine; Moulin, Jean-François; Müller‐Buschbaum, Peter

Customer publications

Influence of Solvent Additive 1,8-Octanedithiol on P3HT:PCBM Solar Cells

Wang, Weijia; Song, Lin; Magerl, David; González, Daniel Moseguí; Körstgens, Volker; Philipp, Martine; Moulin, Jean-François; Müller‐Buschbaum, Peter

Processing solvent additives in polymer:fullerene bulk heterojunction systems are known as a promising method to enhance photovoltaic performance. It is generally agreed that solvent additives enable polymers to have a high degree of molecular order which increases the device performance. However, the understanding of the efficiency enhancement is not complete.…
Structural and magnetic properties of cobalt iron disulfide (Co x Fe 1−x S 2 ) nanocrystals

Gabold, Henrik; Luan, Zhongyue; Paul, Neelima; Opel, Matthias; Müller-Buschbaum, Peter; Law, Matt; Paul, Amitesh

Customer publications

Structural and magnetic properties of cobalt iron disulfide (Co x Fe 1−x S 2 ) nanocrystals

Gabold, Henrik; Luan, Zhongyue; Paul, Neelima; Opel, Matthias; Müller-Buschbaum, Peter; Law, Matt; Paul, Amitesh

We report on synthesis and investigation of nanocrystalline cobalt-iron-pyrites with an emphasis on nanocrystal structure, morphology and magnetic behavior. The nanocrystals (NCs) were 5–25 nm in diameter as characterized using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). With an increase in Fe fraction, X-ray diffraction and small-angle-X-ray scattering (SAXS)…
Hydrogelation Kinetics Measured in a Microfluidic Device with in Situ X-ray and Fluorescence Detection

Seibt, Susanne; With, Sebastian; Bernet, Andreas; Schmidt, Hans-Werner; Förster, Stephan

Customer publications

Hydrogelation Kinetics Measured in a Microfluidic Device with in Situ X-ray and Fluorescence Detection

Seibt, Susanne; With, Sebastian; Bernet, Andreas; Schmidt, Hans-Werner; Förster, Stephan

Efficient hydrogelators will gel water fast and at low concentrations. Small molecule gelling agents that assemble into fibers and fiber networks are particularly effective hydrogelators. Whereas it is straightforward to determine their critical concentration for hydrogelation, the kinetics of hydrogelation is more difficult to study because it is often very…
Structure of the Crystalline Core of Fiber-like Polythiophene Block Copolymer Micelles

Hayward, Dominic W.; Lunn, David J.; Seddon, Annela; Finnegan, John R.; Gould, Oliver E. C.; Magdysyuk, Oxana; Manners, Ian; Whittell, George R.; Richardson, Robert M.

Customer publications

Structure of the Crystalline Core of Fiber-like Polythiophene Block Copolymer Micelles

Hayward, Dominic W.; Lunn, David J.; Seddon, Annela; Finnegan, John R.; Gould, Oliver E. C.; Magdysyuk, Oxana; Manners, Ian; Whittell, George R.; Richardson, Robert M.

The internal structure and cross-sectional geometry of fiber-like poly(3-hexylthiophene)-based block copolymer micelles has been determined using small- and wide-angle X-ray scattering (SAXS and WAXS, respectively) techniques alongside electron and atomic force microscopies. WAXS of concentrated micellar solutions demonstrated that the block copolymers form crystalline-core micelles in solvents…
Viscoelastic properties and reinforcement of non-aggregated and aggregated nanocomposites

Pirner, Daniela; Dulle, Martin; Förster, Stephan

Customer publications

Viscoelastic properties and reinforcement of non-aggregated and aggregated nanocomposites

Pirner, Daniela; Dulle, Martin; Förster, Stephan

We investigate the properties of polymer nanocomposites consisting of narrow disperse spherical nanoparticles that are coated with narrow disperse polymers. These nanoparticles can be homogeneously dispersed in a polymer matrix. The structure of the polymer-coated nanoparticles was examined by using small angle X-ray scattering (SAXS) and transmission electron microscopy (TEM),…