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The formation and morphology of nanoparticle supracrystals

 
: Haubold, Danny; Reichhelm, Annett; Weiz, Alexander; Borchardt, Lars; Ziegler, Christoph; Bahrig, Lydia; Kaskel, Stefan; Ruck, Michael; Eychmüller, Alexander

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Advanced Functional Materials 26 (2016), Nr.27, S.4890-4895
ISSN: 1616-301X
ISSN: 1616-3028
Deutsche Forschungsgemeinschaft DFG
1401/2
NANO- AND BIOTECHNOLOGIES FORPACKAGING OF ELECTRONIC SYSTEMS
European Commission EC
FP7-IDEAS-ERC; 340419; AEROCAT
Englisch
Zeitschriftenaufsatz
Fraunhofer IWS ()
substrate-affected growth; supracrystals; supercrystals; formation mechanism; silver nanoparticles; self assembly; Suprakristalle

Abstract
Supracrystals are highly symmetrical ordered superstructures built up from nanoparticles (NPs) via self-assembly. While the NP assembly has been intensively investigated, the formation mechanism is still not understood. To shed some light onto the formation mechanism, one of the most common supracrystal morphologies, the trigonal structures, as a model system is being used to investigate the formation process in solution. To explain the formation of the trigonal structures and determining the size of the supracrystal seeds formed in solution, the concept of substrate-affected growth is introduced. Furthermore, the influence of the NP concentration on the seed size is shown and our investigations from Ag toward Au are extended.

: http://publica.fraunhofer.de/dokumente/N-439386.html