| 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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Kroon, Renee
Linköping University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Stretchable Tissue‐Like Gold Nanowire Composites with Long‐Term Stability for Neural Interfacescitations
- 2024Stretchable Tissue-Like Gold Nanowire Composites with Long-Term Stability for Neural Interfaces.
- 2024Impact of Oligoether Side-Chain Length on the Thermoelectric Properties of a Polar Polythiophenecitations
- 2023Mechanically Adaptive Mixed Ionic-Electronic Conductors Based on a Polar Polythiophene Reinforced with Cellulose Nanofibrilscitations
- 2023Impact of oxidation-induced ordering on the electrical and mechanical properties of a polythiophene co-processed with bistriflimidic acidcitations
- 2023Impact of Oligoether Side-Chain Length on the Thermoelectric Properties of a Polar Polythiophenecitations
- 2022Tuning of the elastic modulus of a soft polythiophene through molecular dopingcitations
- 2022Visualisation of individual dopants in a conjugated polymer : sub-nanometre 3D spatial distribution and correlation with electrical propertiescitations
- 2022Influence of Molecular Weight on the Organic Electrochemical Transistor Performance of Ladder-Type Conjugated Polymerscitations
- 2022Organogels from Diketopyrrolopyrrole Copolymer Ionene/Polythiophene Blends Exhibit Ground-State Single Electron Transfer in the Solid Statecitations
- 2022Double Doping of a Low-Ionization-Energy Polythiophene with a Molybdenum Dithiolene Complexcitations
- 2021Toughening of a Soft Polar Polythiophene through Copolymerization with Hard Urethane Segmentscitations
- 2020Water/Ethanol Soluble p-Type Conjugated Polymers for the Use in Organic Photovoltaicscitations
- 2019Thermally Activated in Situ Doping Enables Solid-State Processing of Conducting Polymers.citations
- 2019Probing the Relationship between Molecular Structures, Thermal Transitions, and Morphology in Polymer Semiconductors Using a Woven Glass-Mesh-Based DMTA Techniquecitations
- 2019Enhanced Thermoelectric Power Factor of Tensile Drawn Poly(3-hexylthiophene)citations
- 2018Environmentally friendly preparation of nanoparticles for organic photovoltaicscitations
- 2018Environmentally friendly preparation of nanoparticles for organic photovoltaicscitations
- 2018Highly stable doping of a polar polythiophene through co-processing with sulfonic acids and bistriflimidecitations
- 2017Enhanced Electrical Conductivity of Molecularly p-Doped Poly(3-hexylthiophene) through Understanding the Correlation with Solid-State Ordercitations
- 2017Polar Side Chains Enhance Processability, Electrical Conductivity, and Thermal Stability of a Molecularly p-Doped Polythiophenecitations
- 2017Optimization of the power conversion efficiency in high bandgap pyridopyridinedithiophene-based conjugated polymers for organic photovoltaics by the random terpolymer approachcitations
- 2017Enhanced Electrical Conductivity of Molecularly p-Doped Poly(3-hexylthiophene) through Understanding the Correlation with Solid-State Order.citations
- 2017Bulk Doping of Millimeter-Thick Conjugated Polymer Foams for Plastic Thermoelectricscitations
- 2016Thermoelectric plastics: from design to synthesis, processing and structure–property relationshipscitations
- 2015Comparison of selenophene and thienothiophene incorporation into pentacyclic lactam-based conjugated polymers for organic solar cellscitations
- 2015Comparison of selenophene and thienothiophene incorporation into pentacyclic lactam-based conjugated polymers for organic solar cellscitations
- 2012Charge separation dynamics in a narrow band gap polymer-PbS nanocrystal blend for efficient hybrid solar cellscitations
Places of action
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article
Probing the Relationship between Molecular Structures, Thermal Transitions, and Morphology in Polymer Semiconductors Using a Woven Glass-Mesh-Based DMTA Technique
Abstract
<p>The glass transition temperature (T<sub>g</sub>) of polymers is an important parameter that determines the kinetics of molecular organization of polymeric chains. Understanding the T<sub>g</sub> of conjugated polymers is critical in achieving a thermally stable and optimum morphology in polymer:polymer or polymer:small molecule blends in organic electronics. In this study, we have used the woven glass-mesh-based method of dynamic mechanical thermal analysis (DMTA) to evaluate the T<sub>g</sub> of polymer semiconductors, which is generally not easy to detect using conventional techniques such as differential scanning calorimetry (DSC). More importantly, we establish the relationship between the thermal transitions and the molecular structure of polymer semiconductors. For conjugated polymers with rigid conjugated backbones and large alkyl side chains, we report the presence of separate thermal transitions corresponding to the polymer backbone as well as transitions related to side chains, with the latter being the most prominent. By systematically comparing polymer side chains, molecular weight, and backbone structure, the origin of the T<sub>g</sub> and a sub-T<sub>g</sub> transitions have been successfully correlated to the polymer structures. The antiplastization effect of additives has also been used to further prove the origin of the different transitions. Thermal transitions of a range of high performing polymers applied in organic photovoltaics, including TQ1, PTNT, PTB7, PTB7-Th, and N2200, have been systematically studied in this work. According to the measurements, some of these polymers have a very small amorphous part, changing the way the morphology should be described for these materials. We infer that the main phase in these polymers consists of hairy aggregates, with a few π-stacked rigid polymer chains forming the aggregates.</p>