Magnetical and Optical Properties of Nanodiamonds Can Be Tuned by Particles Surface Chemistry: Theoretical and Experimental Study

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• 作者：Irena Kratochv铆lov谩 ; Jakub 艩ebera ; Petr Ashcheulov ; Martin Golan ; Miroslav Ledvina ; Julia M铆膷ov谩 ; Filip Mravec ; Alexander Kovalenko ; Dmitry Zverev ; Boris Yavkin ; Sergei Orlinskii ; Stanislav Z谩li拧 ; Anna Fi拧erov谩 ; Jan Richter ; Lud臎k 艩efc ; Jaroslav Tur谩nek
• 刊名：Journal of Physical Chemistry C
• 出版年：2014
• 出版时间：October 30, 2014
• 年：2014
• 卷：118
• 期：43
• 页码：25245-25252
• 全文大小：346K
• ISSN：1932-7455

文摘

In this paper, new steps toward a better understanding and utilization of high-pressure high-temperature nanodiamonds (NDs) containing nitrogen-vacancy (NV) centers have been taken. NV^{鈥?/sup>-related long-term luminescence of oxygenated particles increased in comparison to plasma hydrogenated NDs鈥?NV鈥?/sup> luminescence. The optically detected NV鈥?/sup> electron spin resonance process can be also significantly affected by ND termination. For H-terminated ND particles the NV鈥?/sup> to NV0 conversion energy is lower than the NV鈥?/sup> excitation energy, so that the delocalized triplet electrons can be more easily released from the original positions and drawn to the electron-attracting localities in the material. The final result of this study was application of luminescent NDs in cells, showing the detectability of luminescent NDs in a standard confocal microscope and ND subcellular distribution in the cells by TEM.}