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Issue 19, 2014
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Synergistically controlled nano-templated growth of tunable gold bud-to-blossom nanostructures: a pragmatic growth mechanism

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Abstract

A novel nano-templating method with a unique nanocrystal growth mechanism has been introduced for the single-pot production of variable-size (110–360 nm), intrinsically monodispersed, single-shaped, tunable plasmonic (580–1300 nm) gold nanomaterials showing a man-made replica of nature's bud-to-blossom steps associated with the gigantic SERS activity. In the first growth step, we synthesized 45 ± 3 nm gold nano-popcorns (GNPops) from 4.3 ± 1.4 nm spherical gold nano-seeds, and in the second growth step, we used GNPops as templates for controlled overgrowth and to produce bigger gold nano-flowers (GNFs) simply by controlling the viscosity of the surfactant. TEM-based electron tomography (ET) of highly structured GNFs provides their actual morphology with no Bragg diffraction artefacts. Due to their broad plasmon tunability throughout the Vis-NIR region and extraordinarily high Raman activity, these materials are suitable for applications in tunable Plasmon spectroscopy, high-throughput Raman sensing and efficient photothermal therapy in the biological window.

Graphical abstract: Synergistically controlled nano-templated growth of tunable gold bud-to-blossom nanostructures: a pragmatic growth mechanism

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Publication details

The article was received on 23 Jan 2014, accepted on 13 Mar 2014 and first published on 14 Mar 2014


Article type: Paper
DOI: 10.1039/C4TC00160E
Citation: J. Mater. Chem. C, 2014,2, 3795-3804
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    Synergistically controlled nano-templated growth of tunable gold bud-to-blossom nanostructures: a pragmatic growth mechanism

    M. Bardhan, B. Satpati, T. Ghosh and D. Senapati, J. Mater. Chem. C, 2014, 2, 3795
    DOI: 10.1039/C4TC00160E

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