6533b7cffe1ef96bd1259a0b
RESEARCH PRODUCT
Atomically Precise Nanocluster Assemblies Encapsulating Plasmonic Gold Nanorods.
Ganapati NatarajanHannu HäkkinenNonappaAnn FernandezAnn FernandezThalappil PradeepTanja LahtinenGanesan ParamasivamBiswajit MondalAnirban SomAmrita Chakrabortysubject
Materials scienceta221Supramolecular chemistryNanotechnology02 engineering and technologyengineering.material010402 general chemistry01 natural sciencesCatalysissupramolecular chemistryNanoclustersDNA nanotechnologysupramolekulaarinen kemiata116Plasmonatomically precise nanoclustersta114General ChemistryGeneral Medicineself-assembly021001 nanoscience & nanotechnologyhydrogen bonding0104 chemical sciencesNanocrystalplasmonic gold nanorodsengineeringNoble metalNanorodnanohiukkasetSelf-assembly0210 nano-technologydescription
The self-assembled structures of atomically precise, ligand-protected noble metal nanoclusters leading to encapsulation of plasmonic gold nanorods (GNRs) is presented. Unlike highly sophisticated DNA nanotechnology, this strategically simple hydrogen bonding-directed self-assembly of nanoclusters leads to octahedral nanocrystals encapsulating GNRs. Specifically, the p-mercaptobenzoic acid (pMBA)-protected atomically precise silver nanocluster, Na4 [Ag44 (pMBA)30 ], and pMBA-functionalized GNRs were used. High-resolution transmission and scanning transmission electron tomographic reconstructions suggest that the geometry of the GNR surface is responsible for directing the assembly of silver nanoclusters via H-bonding, leading to octahedral symmetry. The use of water-dispersible gold nanoclusters, Au≈250 (pMBA)n and Au102 (pMBA)44 , also formed layered shells encapsulating GNRs. Such cluster assemblies on colloidal particles are a new category of precision hybrids with diverse possibilities.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 | Angewandte Chemie (International ed. in English) |