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[16] Achieving Organic Nanoparticles with Redox-Active Capabilities: Synthesis of Gold Nanoparticles in Water as a Proof-of-Principle

J. Nanopart. Res. 2012, 14, 1099. 

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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