Abstract
Herein, we present a unique approach to easily achieve redox-active nanosized organic particles in aqueous environment using a strategy based on ion association between large organic ions, namely tetraphenylborate anions and thiazole orange cations. The anionic tetraphenylborate associates tightly with the cationic redox-active thiazole orange producing a well-defined meta-stable organic nanoscale particle (73 ± 20 nm). These redox-active nanosized organic particles can act as seed sites for metal reductions and as a proof-of-concept, they were used to reduce gold(III) to gold nanoparticles in a neutral, aqueous environment at room temperature.
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Acknowledgments
This work was supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). The authors would like to thank Mr. W. White for mass spectrometry.
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Mooi, S.M., Sutherland, T.C. & Heyne, B. Achieving organic nanoparticles with redox-active capabilities: synthesis of gold nanoparticles in water as a proof-of-principle. J Nanopart Res 14, 1099 (2012). https://doi.org/10.1007/s11051-012-1099-7
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DOI: https://doi.org/10.1007/s11051-012-1099-7