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dc.contributor.authorYang, Miaoxin
dc.contributor.authorChen, Gang
dc.contributor.authorZhao, Yunfeng
dc.contributor.authorSilber, Georg
dc.contributor.authorWang, Yong
dc.contributor.authorXing, Shuangxi
dc.contributor.authorHan, Yu
dc.contributor.authorChen, Hongyu
dc.date.accessioned2015-08-02T09:13:39Z
dc.date.available2015-08-02T09:13:39Z
dc.date.issued2010
dc.identifier.issn14639076
dc.identifier.doi10.1039/c0cp00127a
dc.identifier.urihttp://hdl.handle.net/10754/561534
dc.description.abstractUnderstanding the mechanism of nanoparticle self-assembly is of critical significance for developing synthetic strategies for complex nanostructures. By encapsulating aggregates of Au nanospheres in shells of polystyrene-block- poly(acrylic acid), we prevent the dissociation and aggregation typically associated with the drying of solution samples on TEM/SEM substrates. In our study of the salt-induced aggregation of 2-naphthalenethiol-functionalized Au nanospheres in DMF, the trapping of the solution species under various experimental conditions permits new insights in the mechanism thereof. We provide evidence that the spontaneous linear aggregation in this system is a kinetically controlled process and hence the long-range charge repulsion at the "transition state" before the actual contact of the Au nanospheres is the key factor. Thus, the charge repulsion potential (i.e. the activation energy) a nanosphere must overcome before attaching to either end of a nanochain is smaller than attaching on its sides, which has been previously established. This factor alone could give rise to the selective end-on attachment and lead to the linear assembly of originally isotropic Au nanospheres. © 2010 the Owner Societies.
dc.description.sponsorshipThe authors thank Ministry of Education, Singapore (ARC 27/07 and 13/09) for financial support.
dc.publisherRoyal Society of Chemistry (RSC)
dc.titleMechanistic investigation into the spontaneous linear assembly of gold nanospheres
dc.typeArticle
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Center
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentChemical Science Program
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratory
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalPhysical Chemistry Chemical Physics
dc.contributor.institutionDivision of Chemistry and Biological Chemistry, Nanyang Technological University, 21 Nanyang Link 637371, 637371, Singapore, Singapore
kaust.personZhao, Yunfeng
kaust.personHan, Yu


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