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From large 3D assembly to highly dispersed spherical assembly: weak and strong coordination mediated self-aggregation of Au colloids
Xuanjun Zhang; Dan Li; Xiao-Ping Zhou
2006
Source PublicationNew Journal of Chemistry
ISSN1144-0546
Volume30Issue:6Pages:706-711
Abstract

Distinctly different 3D assemblies of ∼1.6 nm Au nanoparticles are constructed based on weak and strong coordination strategies. Reduction of KAuCl4 with NaBH4 in the presence of newly-synthesized 4-(4-phenylmethanethiol)-2,2′:6′,2′′-terpyridine (1) yields functionalized Au nanoparticles which assemble in situinto large 3D aggregates via weak coordination between alkali metal ions and terpyridine attached to separated particles. These assemblies are disassembled into individual nanoparticles via addition of DMF solvent and further reassembled into highly dispersed 3D spherical nanostructures via addition of Co2+ (strong coordination with 1). Wide and small angle XRD measurements show that the assemblies are formed from small Au nanoparticles, consistent with TEM results. It is significant that the large aggregates formed in situcan be directly transformed into nearly monodispersed 3D spherical assemblies via strong coordination (with Co2+), presenting the first example of a direct transformation of one 3D nanonetwork into another distinctly different 3D nanonetwork. The controlled assembly and disassembly processes are accompanied by distinct shifts in the surface plasmon resonance.

DOIhttp://dx.doi.org/10.1039/b515501k
Indexed BySCI
Language英语
WOS Research AreaChemistry Web Of Science
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:000237426800008
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Citation statistics
Cited Times [WOS]:22   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionFaculty of Health Sciences
AffiliationDepartment of Chemistry & Institute of Advanced Materials, Shantou University, China
Recommended Citation
GB/T 7714
Xuanjun Zhang,Dan Li,Xiao-Ping Zhou. From large 3D assembly to highly dispersed spherical assembly: weak and strong coordination mediated self-aggregation of Au colloids[J]. New Journal of Chemistry,2006,30(6):706-711.
APA Xuanjun Zhang,Dan Li,&Xiao-Ping Zhou.(2006).From large 3D assembly to highly dispersed spherical assembly: weak and strong coordination mediated self-aggregation of Au colloids.New Journal of Chemistry,30(6),706-711.
MLA Xuanjun Zhang,et al."From large 3D assembly to highly dispersed spherical assembly: weak and strong coordination mediated self-aggregation of Au colloids".New Journal of Chemistry 30.6(2006):706-711.
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