Achieving organic nanoparticles with redox-active capabilities: synthesis of gold nanoparticles in water as a proof-of-principle
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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.
KeywordsOrganic nanoparticles Thiazole orange Tetraphenylborate Redox active Gold nanoparticle Green chemistry
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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