| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Stingelin, Natalie
University of Bordeaux
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024Using spatial confinement to decipher polymorphism in the organic semiconductor p-DTS(FBTTh2)2citations
- 2023Conjugated polymer blends for faster organic mixed conductorscitations
- 2023Mission Immiscible: Overcoming the Miscibility Limit of Semiconducting:Ferroelectric Polymer Blends via Vitrificationcitations
- 2022Conjugated Polymer Blends for Faster Organic Mixed Conductorscitations
- 2021Improving molecular alignment and charge percolation in semiconducting polymer films with highly localized electronic states through tailored thermal annealingcitations
- 2020High-density polyethylene—an inert additive with stabilizing effects on organic field-effect transistorscitations
- 2020Enhanced Electrocaloric Response of Vinylidene Fluoride–Based Polymers via One‐Step Molecular Engineeringcitations
- 2020The Importance of Quantifying the Composition of the Amorphous Intermixed Phase in Organic Solar Cellscitations
- 2019Managing local order in conjugated polymer blends via polarity contrastcitations
- 2019The Role of Morphology in Optically Switchable Transistors Based on a Photochromic Molecule/p‐Type Polymer Semiconductor Blendcitations
- 2015Polytellurophenes provide imaging contrast towards unravelling the structure–property–function relationships in semiconductor:insulator polymer blendscitations
- 2015Microstructured organic ferroelectric thin film capacitors by solution micromoldingcitations
- 2015Entanglements in Marginal Solutions: A Means of Tuning Pre-Aggregation of Conjugated Polymers with Positive Implications for Charge Transportcitations
- 2014Additive-assisted supramolecular manipulation of polymer:fullerene blend phase morphologies and its influence on photophysical processescitations
- 2014Tailoring the void space and mechanical properties in electrospun scaffolds towards physiological ranges
- 2014Bis(triisopropylsilylethynyl)pentacene/Au(111) interface: Coupling, molecular orientation, and thermal stabilitycitations
- 2013Microstructure formation in molecular and polymer semiconductors assisted by nucleation agentscitations
- 2012Processing and Low Voltage Switching of Organic Ferroelectric Phase-Separated Bistable Diodescitations
- 2012Ferroelectric Phase Diagram of PVDF:PMMAcitations
- 2011Single-step solution processing of small-molecule organic semiconductor field-effect transistors at high yieldcitations
- 2011Spinodal Decomposition of Blends of Semiconducting and Ferroelectric Polymerscitations
- 2011Structural and Electrical Characterization of ZnO Films Grown by Spray Pyrolysis and Their Application in Thin-Film Transistorscitations
- 2011Wire-bar coating of semiconducting polythiophene / insulating polyethylene blend thin films for organic transistors.citations
Places of action
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article
Entanglements in Marginal Solutions: A Means of Tuning Pre-Aggregation of Conjugated Polymers with Positive Implications for Charge Transport
Abstract
The solution-processing of conjugated polymers, just like commodity polymers, is subject to solvent and molecular weight-dependent solubility, interactions and chain entanglements within the polymer, all of which can influence the crystallization and microstructure development in semi-crystalline polymers and consequently affect charge transport and optoelectronic properties. Disentanglement of polymer chains in marginal solvents was reported to work via ultrasonication, facilitating the formation of photophysically ordered polymer aggregates. In this contribution, we explore how a wide range of technologically relevant solvents and formulations commonly used in organic electronics influence chain entanglement and the aggregation behaviour of P3HT using a combination of rheological and spectrophotometric measurements. The specific viscosity of the solution offers an excellent indication of the degree of entanglements in the solution, which is found to be related to the solubility of P3HT in a given solvent. Moreover, deliberately disentangling the solution in the presence of solvophobic driving forces, leads consistently to formation of photophysically visible aggregates which is indicative of local and perhaps long range order in the solute. We show for a broad range of solvents and molecular weights that disentanglement ultimately leads to significant ordering of the polymer in the solid state and a commensurate increase in charge transport properties. In doing so we demonstrate a remarkable ability to tune the microstructure which has important implications for transport properties. We discuss its potential implications in the context of organic photovoltaics.