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One-pot synthesis of cationic gold nanoparticles by differential reduction

 
: Sperling, Ralph A.; García-Fernández, Lorena; Ojea-Jiménez, Isaac; Piella, Jordi; Bastús, Neus G.; Puntes, V.

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Zeitschrift für physikalische Chemie 231 (2017), No.1, pp.7-18
ISSN: 0044-3328
ISSN: 0044-3336
ISSN: 0942-9352
ISSN: 2196-7156
English
Journal Article
Fraunhofer ICT-IMM ( IMM) ()
cationic nanoparticles; differential reduction; one-pot synthesis; room temperature

Abstract
The size-controlled synthesis of cationic particles by differential reduction of HAuCl4 precursor in the presence of NaBH4 and 1-aminoundecane-12-thiol (AUT) is reported. The number of seed particles is determined by the fraction of the initially Au precursor reduced by NaBH4 present in the reaction mixture, which are then grown larger by the AUT, acting as both weak reducing agent and stabilizing surfactant. By this methodology, size controlled synthesis is achieved in a two-step one-pot synthesis at room temperature.

: http://publica.fraunhofer.de/documents/N-423345.html