Supramacromolecular organization of gold nanocrystals capped with amphiphilic hyperbranched polyethyleneimine. Picco, A., S., Zelaya, E., Azzaroni, O., & Ceolín, M. Journal of Colloid and Interface Science, 397:206-209, 2013.
Supramacromolecular organization of gold nanocrystals capped with amphiphilic hyperbranched polyethyleneimine [link]Website  abstract   bibtex   
The supramolecular structural aspects of hetero-assemblies constituted of gold nanoparticles capped with amphiphilic unimolecular micelles were studied using synchrotron-based small angle X-ray scattering (SAXS). Experimental results revealed that straightforward transfer of citrate-capped Au nanoparticles from an aqueous environment to a toluenic solution of amphiphilic hyperbranched polymers results in the spontaneous integration of the nanocrystals into the extended hydrophilic domains of self-assembled supramolecular structures. In this way, we were able to self-organize metal-polymer nanoarchitectures in solution displaying interesting thermoactive functions, i.e.: hybrid assemblies exhibiting negative thermal expansion coefficients. We consider that this strategy has potentiality to realize self-organized supramolecular hetero-assemblies as it provides an alternative methodology to spontaneously integrate nanoscale building blocks into preformed supramolecular objects. © 2013 Elsevier Inc.
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 title = {Supramacromolecular organization of gold nanocrystals capped with amphiphilic hyperbranched polyethyleneimine},
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 year = {2013},
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 abstract = {The supramolecular structural aspects of hetero-assemblies constituted of gold nanoparticles capped with amphiphilic unimolecular micelles were studied using synchrotron-based small angle X-ray scattering (SAXS). Experimental results revealed that straightforward transfer of citrate-capped Au nanoparticles from an aqueous environment to a toluenic solution of amphiphilic hyperbranched polymers results in the spontaneous integration of the nanocrystals into the extended hydrophilic domains of self-assembled supramolecular structures. In this way, we were able to self-organize metal-polymer nanoarchitectures in solution displaying interesting thermoactive functions, i.e.: hybrid assemblies exhibiting negative thermal expansion coefficients. We consider that this strategy has potentiality to realize self-organized supramolecular hetero-assemblies as it provides an alternative methodology to spontaneously integrate nanoscale building blocks into preformed supramolecular objects. © 2013 Elsevier Inc.},
 bibtype = {article},
 author = {Picco, A S and Zelaya, E and Azzaroni, O and Ceolín, M},
 journal = {Journal of Colloid and Interface Science}
}

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