The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states
The photoexcited triplet states of porphyrins show great promise for applications in the fields of opto-electronics, photonics, molecular wires, and spintronics. The magnetic properties of porphyrin triplet states are most conveniently studied by time-resolved continuous wave and pulse electron spin...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
Elsevier
2023
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| _version_ | 1797111655215136768 |
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| author | Moise, G Redman, AJ Richert, S Myers, WK Bulut, I Bolls, PS Rickhaus, M Sun, J Anderson, HL Timmel, CR |
| author_facet | Moise, G Redman, AJ Richert, S Myers, WK Bulut, I Bolls, PS Rickhaus, M Sun, J Anderson, HL Timmel, CR |
| author_sort | Moise, G |
| collection | OXFORD |
| description | The photoexcited triplet states of porphyrins show great promise for applications in the fields of opto-electronics, photonics, molecular wires, and spintronics. The magnetic properties of porphyrin triplet states are most conveniently studied by time-resolved continuous wave and pulse electron spin resonance (ESR). This family of techniques is singularly able to probe small yet essential details of triplet states: zero-field splittings, g-anisotropy, spin polarisation, and hyperfine interactions. These characteristics are linked to spin–orbit coupling (SOC) which is known to have a strong influence on photophysical properties such as intersystem crossing rates. The present study explores SOC effects induced by the presence of Pd2+ in various porphyrin architectures. In particular, the impact of this relativistic interaction on triplet state fine-structure and spin polarisation is investigated. These properties are probed using time-resolved ESR complemented by electron-nuclear double resonance. The findings of this study could influence the future design of molecular spintronic devices. The Pd2+ ion may be incorporated into porphyrin molecular wires as a way of controlling spin polarisation. |
| first_indexed | 2024-03-07T08:13:28Z |
| format | Journal article |
| id | oxford-uuid:fbd522f0-1bd6-4dc2-91b9-6e562fec736e |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T08:13:28Z |
| publishDate | 2023 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:fbd522f0-1bd6-4dc2-91b9-6e562fec736e2023-12-05T15:26:37ZThe impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet statesJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:fbd522f0-1bd6-4dc2-91b9-6e562fec736eEnglishSymplectic ElementsElsevier2023Moise, GRedman, AJRichert, SMyers, WKBulut, IBolls, PSRickhaus, MSun, JAnderson, HLTimmel, CRThe photoexcited triplet states of porphyrins show great promise for applications in the fields of opto-electronics, photonics, molecular wires, and spintronics. The magnetic properties of porphyrin triplet states are most conveniently studied by time-resolved continuous wave and pulse electron spin resonance (ESR). This family of techniques is singularly able to probe small yet essential details of triplet states: zero-field splittings, g-anisotropy, spin polarisation, and hyperfine interactions. These characteristics are linked to spin–orbit coupling (SOC) which is known to have a strong influence on photophysical properties such as intersystem crossing rates. The present study explores SOC effects induced by the presence of Pd2+ in various porphyrin architectures. In particular, the impact of this relativistic interaction on triplet state fine-structure and spin polarisation is investigated. These properties are probed using time-resolved ESR complemented by electron-nuclear double resonance. The findings of this study could influence the future design of molecular spintronic devices. The Pd2+ ion may be incorporated into porphyrin molecular wires as a way of controlling spin polarisation. |
| spellingShingle | Moise, G Redman, AJ Richert, S Myers, WK Bulut, I Bolls, PS Rickhaus, M Sun, J Anderson, HL Timmel, CR The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states |
| title | The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states |
| title_full | The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states |
| title_fullStr | The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states |
| title_full_unstemmed | The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states |
| title_short | The impact of spin–orbit coupling on fine-structure and spin polarisation in photoexcited porphyrin triplet states |
| title_sort | impact of spin orbit coupling on fine structure and spin polarisation in photoexcited porphyrin triplet states |
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