Heterosupramolecular chemistry: Recognition Initiated and Inhibited Silver Nanocrystal Aggregation
2000 (English)In: Journal of the American Chemical Society, ISSN 0002-7863, E-ISSN 1520-5126, Vol. 122, no 26, 6252-6257 p.Article in journal (Refereed) Published
Near size-monodisperse silver nanocrystals stabilized by chemisorption of a mixture of an alkane thiol (85%) and an alkane thiol incorporating a dibenzo-24-crown-8 moiety (15%) have been prepared. Using dynamic light scattering and nuclear magnetic resonance, it is shown that addition of bis-dibenzylammonium dication initiates aggregation of the silver nanocrystal dispersion by pseudorotaxane assembly. It is also shown that addition of excess dibenzylammonium cation or dibenzo-24-crown-8 inhibits further aggregation. This novel demonstration of controlled nanocrystal aggregation points the way toward the programmed assembly of complex nanocrystal architectures in solution.
Place, publisher, year, edition, pages
2000. Vol. 122, no 26, 6252-6257 p.
IdentifiersURN: urn:nbn:se:uu:diva-24087DOI: 10.1021/ja0002621OAI: oai:DiVA.org:uu-24087DiVA: diva2:51861