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Published in

American Chemical Society, The Journal of Physical Chemistry A, 46(117), p. 11933-11939, 2013

DOI: 10.1021/jp403183x

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Grafting Nitroxide Radicals on Nanodiamond Surface Using Click Chemistry

Journal article published in 2013 by Ekaterina E. Romanova, Rana Akiel, Franklin H. Cho, Susumu Takahashi ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We demonstrate grafting of nitroxide radicals on the surface of nanodiamonds (NDs). The surface of NDs is functionalized by azide groups. Nitroxide radicals are covalently bonded using Cu(I)-catalyzed azide/alkyne-click chemistry approach. The reaction is confirmed by infrared spectroscopy. The grafting of nitroxides is also verified by studying the rotational correlational time using electron paramagnetic resonance (EPR) spectroscopy. EPR study estimates that a few hundreds (tens) of nitroxide radicals are grafted on the surface of NDs with 100 nm (25 nm) of the average diameter.