Aqueous Black Colloids of Reticular Nanostructured Gold

Since ancient times, noble gold has continuously contributed to several aspects of life from medicine to electronics. It perpetually reveals its new features. We report the finding of a unique form of gold, reticular nanostructured gold (RNG), as an aqueous black colloid, for which we present a one-step synthesis. The reticules consist of gold crystals that interconnect to form compact strands. RNG exhibits high conductivity and low reflection, and these features, coupled with the high specific surface area of the material, could prove valuable for applications in electronics and catalysis. Due to high absorption throughout the visible and infrared domain, RNG has the potential to be applied in the construction of sensitive solar cells or as a substrate for Raman spectroscopy.

[1]  Peidong Yang,et al.  Shaping binary metal nanocrystals through epitaxial seeded growth. , 2007, Nature materials.

[2]  Xiaomei Wang,et al.  Room-temperature strategy for networked nonspherical gold nanostructures from Au(III)[G-2]CO2H dendrimer complex. , 2006, Journal of colloid and interface science.

[3]  David S. Bush,et al.  The New Gold Standard , 2008, Journal of the International Neuropsychological Society.

[4]  R. Rosenfeld.  Nature , 2009, Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery.

[5]  F. W. Paish.  The new gold standard , 1957 .

[6]  Vincent M. Rotello,et al.  Self-assembly of nanoparticles into structured spherical and network aggregates , 2000, Nature.

[7]  Lin-Wang Wang,et al.  Colloidal nanocrystal heterostructures with linear and branched topology , 2004, Nature.

[8]  Shigeru Toyama,et al.  Surface plasmon resonance of electrochemically deposited Au-black , 2002 .

[9]  G. Hutchings,et al.  Tunable gold catalysts for selective hydrocarbon oxidation under mild conditions , 2005, Nature.

[10]  Xinping Zhang,et al.  Lithography-free fabrication of large-area plasmonic nanostructures using colloidal gold nanoparticles , 2010 .

[11]  J. Snell.  The golden handshake. , 1995, Nursing times.

[12]  Yadong Yin,et al.  Colloidal nanocrystal synthesis and the organic–inorganic interface , 2005, Nature.

[13]  Yu Zhang,et al.  One-step controlled synthesis of anisotropic gold nanostructures with aniline as the reductant in aqueous solution. , 2007, Journal of colloid and interface science.

[14]  M. A. O. Ignacio,et al.  How to cite this article , 2016 .

[15]  Liqiang Zheng,et al.  Novel two-step synthesis of various gold nanostructures using Langmuir monolayers , 2011 .

[16]  A. H. Pfund.  The Optical Properties of Metallic and Crystalline Powders , 1933 .

[17]  V. Devarajan,et al.  Vibrational spectra of complex borates—II. B(OH)4−-ion in teepleite, Raman spectrum and normal coordinate analysis , 1974 .

[18]  J. Crocker,et al.  Nanomaterials: Golden handshake , 2008, Nature.

[19]  Younan Xia,et al.  Shape-Controlled Synthesis of Gold and Silver Nanoparticles , 2002, Science.

[20]  Karen Weintraub,et al.  Biomedicine: The new gold standard , 2013, Nature.