Silver Nanodisks: Synthesis, Characterization, and Self-Assembly
- 21 September 2002
- journal article
- Published by American Chemical Society (ACS) in The Journal of Physical Chemistry B
- Vol. 106 (42), 10777-10781
- https://doi.org/10.1021/jp026376b
Abstract
A new form of silver nanostructured materials, silver nanodisks, are generated by a solution-phase approach. In this method, truncated triangular silver nanoplates are at first fabricated through seed-mediated growth of silver particles in the presence of concentrated cetyltrimethylammonium bromide (CTAB). Subsequent aging of the obtained triangular silver nanoplate solution at 40 degreesC leads to the formation of silver nanodisks. Transmission electron microscopy and atomic force microscopy studies show that the nanodisks have a thickness of the order of 20-30 nm and a diameter around 60 nm. X-ray and electron diffraction analyses reveal that the nanodisks are single crystals and with their basal plane as the (111) lattice plane. These nanodisks display a strong surface plasmon absorption band at 475 nm. The formation of a self-assembled monolayer of CTAB on the basal plane is suggested to account for both the anisotropic growth from triangular' nanoplates to nanodisks and the formation of large-scale necklace-like nanostructuresKeywords
This publication has 32 references indexed in Scilit:
- Shape effects in plasmon resonance of individual colloidal silver nanoparticlesThe Journal of Chemical Physics, 2002
- Template-Engaged Replacement Reaction: A One-Step Approach to the Large-Scale Synthesis of Metal Nanostructures with Hollow InteriorsNano Letters, 2002
- Photoinduced Conversion of Silver Nanospheres to NanoprismsScience, 2001
- Single-target molecule detection with nonbleaching multicolor optical immunolabelsProceedings of the National Academy of Sciences of the United States of America, 2000
- Synthesis of Highly Monodisperse Silver Nanoparticles from AOT Reverse Micelles: A Way to 2D and 3D Self-OrganizationChemistry of Materials, 1997
- Probing Single Molecules and Single Nanoparticles by Surface-Enhanced Raman ScatteringScience, 1997
- Highly Oriented Molecular Ag Nanocrystal ArraysThe Journal of Physical Chemistry, 1996
- REPRODUCIBLE PREPARATION OF SILVER SOLS WITH UNIFORM PARTICLE SIZE FOR APPLICATION IN SURFACE‐ENHANCED RAMAN SPECTROSCOPYPhotochemistry and Photobiology, 1994
- Structural studies of trigonal lamellar particles of gold and silverProceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences, 1993
- Ultraviolet–visible absorption spectra of the colloidal metallic elementsJournal of the Chemical Society, Faraday Transactions, 1991