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Customer publications

Customer publications

Hydrogen evolution at conjugated polymer nanoparticle electrodes

Fortin, Patrick; Rajasekar, Subash; Chowdhury, Pankaj; Holdcroft, Steven

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…
Xenocs
12 March 2019
Customer publications

Polyurethanes with POSS pendent on flexible hard segments: Morphology and glass transition

Koutsoumpis, Stefanos; Ozimek, Jan; Raftopoulos, Konstantinos N.; Hebda, Edyta; Klonos, Panagiotis; Papadakis, Christine M.; Pielichowski, Krzysztof; Pissis, Polycarpos

Polyhedral Oligomeric Silsesquioxanne (POSS) moieties are tethered on a polyurethane chain, as side groups on the hard domains, which are based on the flexible hexamethylene diisocyanate (HDI). Their effect on morphology, and consequently on molecular dynamics, is studied in detail by microscopy, scattering, spectroscopic, thermal, and dielectric techniques. Albeit the…
Xenocs
12 March 2019
Customer publications

The Underestimated Effect of Intracrystalline Chain Dynamics on the Morphology and Stability of Semicrystalline Polymers

Schulz, Martha; Seidlitz, Anne; Kurz, Ricardo; Bärenwald, Ruth; Petzold, Albrecht; Saalwächter, Kay; Thurn-Albrecht, Thomas

Semicrystalline polymers have been classified into crystal-mobile and crystal-fixed polymers, depending on the existence or absence of intracrystalline chain dynamics. Although it was claimed that polymers with intracrystalline chain dynamics generally have a higher crystallinity, its effect on the semicrystalline morphology is not known in detail. Using a new approach…
Xenocs
12 March 2019
Customer publications

P-Type Low-Molecular-Weight Hydrogelators

Draper, Emily R.; Dietrich, Bart; Brasnett, Christopher; Sproules, Stephen; McDonald, Tom O.; Seddon, Annela M.; Adams, Dave J.

As the use of low-molecular-weight gelators (LMWGs) as components in single and multicomponent systems for optoelectronic and solar cell applications increases, so does the need for more functional gelators. There are relatively few examples of p-type gelators that can be used in such systems. Here, the synthesis and characterization of…
Xenocs
12 March 2019
ApplicationCharacteristic dimensionCharacterizationCustomer publicationsLiquid crystalsMaterialOtherPhase analysisTechniqueTemperatureWAXS

Highly Efficient Luminescent Liquid Crystal with Aggregation-Induced Energy Transfer

Liu, Yi; You, Li Hong; Lin, Fa Xu; Fu, Kuo; Yuan, Wang Zhang; Chen, Er-Qiang; Yu, Zhen-Qiang; Tang, Ben Zhong

A luminescent liquid crystal molecule (TPEMes) with efficient solid-state emission is rationally constructed via the chemical conjugation of blue-emitting tetraphenylethene cores and luminescent mesogenic tolane moieties, which are both featured with aggregation-induced emission properties. As for this fluorophore, aggregation-induced energy transfer from the emissive tolane mesogens to the…
Xenocs
12 March 2019
Customer publications

Conduction mechanism in polymeric membranes based on PEO or PVdF-HFP and containing a piperidinium ionic liquid

Elamin, Khalid; Shojaatalhosseini, Mansoureh; Danyliv, Olesia; Martinelli, Anna; Swenson, Jan

Two types of polymer electrolyte membranes were prepared using poly(ethylene oxide) (PEO) and poly(vinylidene difluoride-co-hexafluoropropylene) (PVdF-HFP), with different amounts of the ionic liquid N-methyl-N-propylpiperidinium bis(trifluoromethane-sulfonyl)imide () added. The results from differential scanning calorimetry and conductivity measurements show that in the case of…
Xenocs
12 March 2019