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Materials 2018, 11(8), 1479; https://doi.org/10.3390/ma11081479

Single-Step Metal-Free Grafting of Cationic Polymer Brushes on Fluorescent Nanodiamonds

1
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 106, Taiwan
2
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan
*
Authors to whom correspondence should be addressed.
Received: 20 July 2018 / Revised: 10 August 2018 / Accepted: 16 August 2018 / Published: 20 August 2018
(This article belongs to the Special Issue Nanodiamond Particles: Properties and Applications)
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Abstract

Cationic polymers are often employed in conjugation with nanomaterials, and the resultant hybrids are useful for various bioapplications. Here, a single-step metal-free method for the synthesis of fluorescent nanodiamonds (FNDs) conjugated with cationic polymer brushes is reported. Distinct from the common methods such as atom transfer radical polymerization and reversible addition fragmentation chain transfer, our ring-opening-polymerization-based method is simple and less time consuming and hazardous. Infrared spectroscopy, thermogravimetric analysis, zeta potential, and dynamic light scattering confirmed the synthesis. The produced FND-polymer brushes showed markedly higher cell labeling and internalization efficiency without noticeable cytotoxicity. Our method is general and applicable to other nanoparticles as well for uses in diverse research areas. View Full-Text
Keywords: cationic polymer; cell labeling; fluorescence imaging; nanodiamond; ring-opening reaction cationic polymer; cell labeling; fluorescence imaging; nanodiamond; ring-opening reaction
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Sotoma, S.; Hsieh, F.-J.; Chang, H.-C. Single-Step Metal-Free Grafting of Cationic Polymer Brushes on Fluorescent Nanodiamonds. Materials 2018, 11, 1479.

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