Ultrathin Uniform Platinum Nanowires via a Facile Route Using an Inverse Hexagonal Surfactant Phase Template

Langmuir : the ACS Journal of Surfaces and Colloids
Samina AkbarAdam M Squires

Abstract

We present an attractive method for the fabrication of long, straight, highly crystalline, ultrathin platinum nanowires. The fabrication is simply achieved using an inverse hexagonal (HII) lyotropic liquid crystal phase of the commercial surfactant phytantriol as a template. A platinum precursor dissolved within the cylindrical aqueous channels of the liquid crystal phase is chemically reduced by galvanic displacement using stainless steel. We demonstrate the production of nanowires using the HII phase in the phytantriol/water system which we obtain either by heating to 55 °C or at room temperature by the addition of a hydrophobic liquid, 9- cis-tricosene, to relieve packing frustration. The two sets of conditions produced high aspect nanowires with diameters of 2.5 and 1.7 nm, respectively, at least hundreds of nanometers in length, matching the size of the aqueous channels in which they grow. This versatile approach can be extended to produce highly uniform nanowires from a range of metals.

References

Jan 12, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Anan YaghmurOtto Glatter
Nov 15, 2007·Nano Letters·Yujiang SongJohn A Shelnutt
Aug 10, 2010·Nanoscale·Soshan CheongRichard D Tilley
Jul 19, 2006·Journal of Physics. Condensed Matter : an Institute of Physics Journal·G C ShearmanJ M Seddon
Oct 4, 2011·International Journal of Pharmaceutics·Stephanie PhanBen J Boyd
Oct 4, 2012·Nano Letters·Daniel AzulaiGil Markovich

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Citations

Apr 24, 2020·Nanoscale Horizons : the Home for Rapid Reports of Exceptional Significance in Nanoscience and Nanotechnolgy·Livia Salvati ManniRaffaele Mezzenga

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