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Controlled Formation of Silicon-Vacancy Centers in High-Pressure Nanodiamonds Produced from an "Adamantane + Detonation Nanodiamond" Mixture.

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Title: Controlled Formation of Silicon-Vacancy Centers in High-Pressure Nanodiamonds Produced from an "Adamantane + Detonation Nanodiamond" Mixture.
Authors: Pasternak, Dmitrii G.1 (AUTHOR) dg.pasternak@physics.msu.ru, Bagramov, Rustem H.2 (AUTHOR) bagramov@hppi.troitsk.ru, Romshin, Alexey M.1 (AUTHOR), Zibrov, Igor P.2 (AUTHOR) zibrov@hppi.troitsk.ru, Filonenko, Vladimir P.2 (AUTHOR) filv@hppi.troitsk.ru, Vlasov, Igor I.1 (AUTHOR) dg.pasternak@physics.msu.ru
Source: Nanomaterials (2079-4991). Nov2024, Vol. 14 Issue 22, p1843. 12p.
Subjects: Impurity centers, Adamantane, Nanodiamonds, Fluorescence, Hydrocarbons, Silicon
Abstract: Despite progress in the high-pressure synthesis of nanodiamonds from hydrocarbons, the problem of controlled formation of fluorescent impurity centers in them still remains unresolved. In our work, we explore the potential of a new precursor composition, a mixture of adamantane with detonation nanodiamond, both in the synthesis of nanodiamonds and in the controlled formation of negatively charged silicon-vacancy centers in such nanodiamonds. Using different adamantane/detonation nanodiamond weight ratios, a series of samples was synthesized at a pressure of 7.5 GPa in the temperature range of 1200–1500 °C. It was found that temperature around 1350 °C, is optimal for the high-yield synthesis of nanodiamonds <50 nm in size. For the first time, controlled formation of negatively charged silicon-vacancy centers in such small nanodiamonds was demonstrated by varying the atomic ratios of silicon/carbon in the precursor in the range of 0.01–1%. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Controlled Formation of Silicon-Vacancy Centers in High-Pressure Nanodiamonds Produced from an &quot;Adamantane + Detonation Nanodiamond&quot; Mixture.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Nanomaterials+%282079-4991%29%22&quot;&gt;Nanomaterials (2079-4991)&lt;/searchLink&gt;. Nov2024, Vol. 14 Issue 22, p1843. 12p.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Impurity+centers%22&quot;&gt;Impurity centers&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Adamantane%22&quot;&gt;Adamantane&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Nanodiamonds%22&quot;&gt;Nanodiamonds&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Fluorescence%22&quot;&gt;Fluorescence&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Hydrocarbons%22&quot;&gt;Hydrocarbons&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Silicon%22&quot;&gt;Silicon&lt;/searchLink&gt;
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  Data: Despite progress in the high-pressure synthesis of nanodiamonds from hydrocarbons, the problem of controlled formation of fluorescent impurity centers in them still remains unresolved. In our work, we explore the potential of a new precursor composition, a mixture of adamantane with detonation nanodiamond, both in the synthesis of nanodiamonds and in the controlled formation of negatively charged silicon-vacancy centers in such nanodiamonds. Using different adamantane/detonation nanodiamond weight ratios, a series of samples was synthesized at a pressure of 7.5 GPa in the temperature range of 1200–1500 &#176;C. It was found that temperature around 1350 &#176;C, is optimal for the high-yield synthesis of nanodiamonds &lt;50 nm in size. For the first time, controlled formation of negatively charged silicon-vacancy centers in such small nanodiamonds was demonstrated by varying the atomic ratios of silicon/carbon in the precursor in the range of 0.01–1%. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano14221843
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        Text: English
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        PageCount: 12
        StartPage: 1843
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      – SubjectFull: Impurity centers
        Type: general
      – SubjectFull: Adamantane
        Type: general
      – SubjectFull: Nanodiamonds
        Type: general
      – SubjectFull: Fluorescence
        Type: general
      – SubjectFull: Hydrocarbons
        Type: general
      – SubjectFull: Silicon
        Type: general
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      – TitleFull: Controlled Formation of Silicon-Vacancy Centers in High-Pressure Nanodiamonds Produced from an "Adamantane + Detonation Nanodiamond" Mixture.
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              Text: Nov2024
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