"Core-Shell" Diamond Nanoparticles with NV- Centers and a Highly Isotopically Enriched C-13 Shell as a Promising Hyperpolarization Agent
In this article, we demonstrate the synthesis of "core-shell" diamond nanoparticles, possessing nitrogen-vacancy (NV-) centers and naturally abundant C-13 in the inner part (or the "core") and a highly isotopically enriched outer part (or the "shell"). Such nanoparticle...
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| Veröffentlicht in: | Journal of physical chemistry. C 2021-12 |
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| container_title | Journal of physical chemistry. C |
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| creator | Mindarava, Yuliya Blinder, Remi Davydov, Valery A. Zaghrioui, Mustapha Agafonov, Viatcheslav N. Autret, Cecile Balasubramanian, Priyadharshini Brouwer, Raul Gonzalez Jelezko, Fedor |
| description | In this article, we demonstrate the synthesis of "core-shell" diamond nanoparticles, possessing nitrogen-vacancy (NV-) centers and naturally abundant C-13 in the inner part (or the "core") and a highly isotopically enriched outer part (or the "shell"). Such nanoparticles are formed by overgrowth over previously electron-irradiated nanodiamonds under high-pressure high-temperature conditions. The synthesized diamond material is investigated using microscopy and spectroscopy techniques. Raman spectroscopy provides an estimate (96%) for the C-13 isotopic content within the "shell", and the persistence of NV-centers in the natural abundance "core", providing an optically detected magnetic resonance signal, is confirmed. Considering the measured nuclear polarization lifetime (T-1 similar to 90 s), the estimation of the spin diffusion length for the "shell" nuclear spins reveals that C-13 can act as a vector for transferring the spin polarization from NV- centers to the surface. These particles, therefore, offer a promising platform for the hyperpolarization of nuclear spins in a fluid. |
| doi_str_mv | 10.1021/acs.jpcc.1c08283 |
| format | Article |
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Such nanoparticles are formed by overgrowth over previously electron-irradiated nanodiamonds under high-pressure high-temperature conditions. The synthesized diamond material is investigated using microscopy and spectroscopy techniques. Raman spectroscopy provides an estimate (96%) for the C-13 isotopic content within the "shell", and the persistence of NV-centers in the natural abundance "core", providing an optically detected magnetic resonance signal, is confirmed. Considering the measured nuclear polarization lifetime (T-1 similar to 90 s), the estimation of the spin diffusion length for the "shell" nuclear spins reveals that C-13 can act as a vector for transferring the spin polarization from NV- centers to the surface. 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Considering the measured nuclear polarization lifetime (T-1 similar to 90 s), the estimation of the spin diffusion length for the "shell" nuclear spins reveals that C-13 can act as a vector for transferring the spin polarization from NV- centers to the surface. 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C</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Mindarava, Yuliya</au><au>Blinder, Remi</au><au>Davydov, Valery A.</au><au>Zaghrioui, Mustapha</au><au>Agafonov, Viatcheslav N.</au><au>Autret, Cecile</au><au>Balasubramanian, Priyadharshini</au><au>Brouwer, Raul Gonzalez</au><au>Jelezko, Fedor</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>"Core-Shell" Diamond Nanoparticles with NV- Centers and a Highly Isotopically Enriched C-13 Shell as a Promising Hyperpolarization Agent</atitle><jtitle>Journal of physical chemistry. C</jtitle><stitle>J PHYS CHEM C</stitle><date>2021-12-12</date><risdate>2021</risdate><issn>1932-7447</issn><eissn>1932-7455</eissn><abstract>In this article, we demonstrate the synthesis of "core-shell" diamond nanoparticles, possessing nitrogen-vacancy (NV-) centers and naturally abundant C-13 in the inner part (or the "core") and a highly isotopically enriched outer part (or the "shell"). Such nanoparticles are formed by overgrowth over previously electron-irradiated nanodiamonds under high-pressure high-temperature conditions. The synthesized diamond material is investigated using microscopy and spectroscopy techniques. Raman spectroscopy provides an estimate (96%) for the C-13 isotopic content within the "shell", and the persistence of NV-centers in the natural abundance "core", providing an optically detected magnetic resonance signal, is confirmed. Considering the measured nuclear polarization lifetime (T-1 similar to 90 s), the estimation of the spin diffusion length for the "shell" nuclear spins reveals that C-13 can act as a vector for transferring the spin polarization from NV- centers to the surface. These particles, therefore, offer a promising platform for the hyperpolarization of nuclear spins in a fluid.</abstract><cop>WASHINGTON</cop><pub>Amer Chemical Soc</pub><doi>10.1021/acs.jpcc.1c08283</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-8702-0340</orcidid><orcidid>https://orcid.org/0000-0003-3668-1672</orcidid><orcidid>https://orcid.org/0000-0001-6655-0150</orcidid><orcidid>https://orcid.org/0000-0003-3699-3864</orcidid></addata></record> |
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| source | ACS Publications; Web of Science - Science Citation Index Expanded - 2021<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" /> |
| subjects | Chemistry Chemistry, Physical Materials Science Materials Science, Multidisciplinary Nanoscience & Nanotechnology Physical Sciences Science & Technology Science & Technology - Other Topics Technology |
| title | "Core-Shell" Diamond Nanoparticles with NV- Centers and a Highly Isotopically Enriched C-13 Shell as a Promising Hyperpolarization Agent |
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