Perdeuterated Conjugated Polymers for Ultralow‐Frequency Magnetic Resonance of OLEDs
| Autor: | Paul L. Burn, Sebastian Milster, Christoph Boehme, Hermann Kraus, John M. Lupton, Tobias Grünbaum, Sebastian Bange, Anna E. Leung, Dani M. Stoltzfus, Tamim A. Darwish, Simon Kurrmann |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Electron 010402 general chemistry 01 natural sciences Magnetic Resonance | Very Important Paper Catalysis magnetic resonance symbols.namesake conjugated polymers Hyperfine structure isotopes Spin-½ deuteration Larmor precession Zeeman effect 010405 organic chemistry Communication Resonance Magnetoreception General Medicine General Chemistry organic light-emitting diodes Communications 0104 chemical sciences Magnetic field symbols Atomic physics |
| Zdroj: | Angewandte Chemie (International Ed. in English) |
| ISSN: | 1521-3773 1433-7851 |
| DOI: | 10.1002/anie.202002477 |
| Popis: | The formation of excitons in OLEDs is spin dependent and can be controlled by electron‐paramagnetic resonance, affecting device resistance and electroluminescence yield. We explore electrically detected magnetic resonance in the regime of very low magnetic fields ( Perdeuteration of a common OLED emitter allows the detection of paramagnetic resonances at field strengths comparable to Earth's. The competition between narrow resonance spectra and a quasistatic zero‐field feature resulting from reduced hyperfine coupling points at a low‐field limit for detecting paramagnetic resonances in radical‐pair‐based systems. |
| Databáze: | OpenAIRE |
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