Surface sensing of quantum dots by electron spins
The nanoscale design of quantum dots (QDs) requires advanced analytical techniques. However, those that are commonly used do not have sufficient sensitivity or spatial resolution. Here, we use magnetic resonance techniques combined with paramagnetic Mn-impurities in PbS QDs for sensitive probing of...
| Main Authors: | , , , , , |
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| Format: | Article |
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American Chemical Society
2016
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| Online Access: | https://eprints.nottingham.ac.uk/36916/ |
| _version_ | 1848795359249170432 |
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| author | Moro, Fabrizio Turyanska, Lyudmila Wilman, James Williams, Huw E.L. Fielding, Alistair John Patanè, Amalia |
| author_facet | Moro, Fabrizio Turyanska, Lyudmila Wilman, James Williams, Huw E.L. Fielding, Alistair John Patanè, Amalia |
| author_sort | Moro, Fabrizio |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The nanoscale design of quantum dots (QDs) requires advanced analytical techniques. However, those that are commonly used do not have sufficient sensitivity or spatial resolution. Here, we use magnetic resonance techniques combined with paramagnetic Mn-impurities in PbS QDs for sensitive probing of the QD surface and environment. In particular, we reveal inequivalent proton spin relaxations of the capping ligands and solvent molecules, strengths and anisotropies of the Mn-nuclear spin interactions, and Mn-nuclei distances with ~ 1 Å sensitivity. These findings demonstrate the potential of magnetically doped QDs as sensitive magnetic nano-probes and the use of electron spins for surface sensing. |
| first_indexed | 2025-11-14T19:30:50Z |
| format | Article |
| id | nottingham-36916 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:30:50Z |
| publishDate | 2016 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-369162020-05-04T18:12:24Z https://eprints.nottingham.ac.uk/36916/ Surface sensing of quantum dots by electron spins Moro, Fabrizio Turyanska, Lyudmila Wilman, James Williams, Huw E.L. Fielding, Alistair John Patanè, Amalia The nanoscale design of quantum dots (QDs) requires advanced analytical techniques. However, those that are commonly used do not have sufficient sensitivity or spatial resolution. Here, we use magnetic resonance techniques combined with paramagnetic Mn-impurities in PbS QDs for sensitive probing of the QD surface and environment. In particular, we reveal inequivalent proton spin relaxations of the capping ligands and solvent molecules, strengths and anisotropies of the Mn-nuclear spin interactions, and Mn-nuclei distances with ~ 1 Å sensitivity. These findings demonstrate the potential of magnetically doped QDs as sensitive magnetic nano-probes and the use of electron spins for surface sensing. American Chemical Society 2016-09-14 Article PeerReviewed Moro, Fabrizio, Turyanska, Lyudmila, Wilman, James, Williams, Huw E.L., Fielding, Alistair John and Patanè, Amalia (2016) Surface sensing of quantum dots by electron spins. Nano Letters, 16 (10). pp. 6343-6348. ISSN 1530-6992 http://dx.doi.org/10.1021/acs.nanolett.6b02727 doi:10.1021/acs.nanolett.6b02727 doi:10.1021/acs.nanolett.6b02727 |
| spellingShingle | Moro, Fabrizio Turyanska, Lyudmila Wilman, James Williams, Huw E.L. Fielding, Alistair John Patanè, Amalia Surface sensing of quantum dots by electron spins |
| title | Surface sensing of quantum dots by electron spins |
| title_full | Surface sensing of quantum dots by electron spins |
| title_fullStr | Surface sensing of quantum dots by electron spins |
| title_full_unstemmed | Surface sensing of quantum dots by electron spins |
| title_short | Surface sensing of quantum dots by electron spins |
| title_sort | surface sensing of quantum dots by electron spins |
| url | https://eprints.nottingham.ac.uk/36916/ https://eprints.nottingham.ac.uk/36916/ https://eprints.nottingham.ac.uk/36916/ |