Unveiling Linker-Born Electron Spin Centers in UiO-66-NH2 MOF
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arXiv
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| Auteurs principaux: | , , , , , , , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866915658304847872 |
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| author | Biktagirov, Timur Otal, Eugenio Trost, Leopold Dörflinger, Patrick Teshima, Katsuya Trukhina, Olga Klose, Daniel Schmidt, Wolf Gero Kultaeva, Anastasiia |
| author_facet | Biktagirov, Timur Otal, Eugenio Trost, Leopold Dörflinger, Patrick Teshima, Katsuya Trukhina, Olga Klose, Daniel Schmidt, Wolf Gero Kultaeva, Anastasiia |
| contents | Metal-organic frameworks (MOFs), with their high porosity and large internal surface area, provide versatile platforms for integrating spin centers with potential applications in catalysis and quantum sensing. Here, we identify a stable NH radical spin center in UiO-66-NH2, a zirconium-based MOF with aminoterephthalic acid (TPA-NH2) linkers. Using electron paramagnetic resonance spectroscopy and density functional theory calculations, we determine the nature and spin Hamiltonian parameters of this radical. We also demonstrate that the NH spin center exhibits a relatively long coherence time, making it a strong candidate for quantum sensing. Since this spin center is intrinsic to TPA-NH2 linkers, our findings open new directions for leveraging organic radicals in MOFs for quantum technologies beyond the UiO-66-NH2 family. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_11591 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Unveiling Linker-Born Electron Spin Centers in UiO-66-NH2 MOF Biktagirov, Timur Otal, Eugenio Trost, Leopold Dörflinger, Patrick Teshima, Katsuya Trukhina, Olga Klose, Daniel Schmidt, Wolf Gero Kultaeva, Anastasiia Materials Science Metal-organic frameworks (MOFs), with their high porosity and large internal surface area, provide versatile platforms for integrating spin centers with potential applications in catalysis and quantum sensing. Here, we identify a stable NH radical spin center in UiO-66-NH2, a zirconium-based MOF with aminoterephthalic acid (TPA-NH2) linkers. Using electron paramagnetic resonance spectroscopy and density functional theory calculations, we determine the nature and spin Hamiltonian parameters of this radical. We also demonstrate that the NH spin center exhibits a relatively long coherence time, making it a strong candidate for quantum sensing. Since this spin center is intrinsic to TPA-NH2 linkers, our findings open new directions for leveraging organic radicals in MOFs for quantum technologies beyond the UiO-66-NH2 family. |
| title | Unveiling Linker-Born Electron Spin Centers in UiO-66-NH2 MOF |
| topic | Materials Science |
| url | https://arxiv.org/abs/2412.11591 |