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Biomimetic Synthesis of Gold Nanocrystals Using a Reducing Amphiphile
Author(s) -
Gonzaga Ferdinand,
Singh Sherdeep,
Brook Michael A.
Publication year - 2008
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.200701163
Subject(s) - amphiphile , nucleation , pulmonary surfactant , nanocrystal , aqueous solution , materials science , citric acid , colloidal gold , chemical engineering , metal ions in aqueous solution , particle size , reducing agent , metal , chelation , silicone , nanotechnology , inorganic chemistry , chemistry , organic chemistry , nanoparticle , copolymer , metallurgy , engineering , polymer
The first synthesis of a chelating and reactive surfactant derived from citric acid and a short silicone as hydrophobic tail is described. Aqueous solutions of this reactive amphiphile spontaneously induce gold ion reduction, particle nucleation, and further direct crystal growth. The process, both pH and light dependent, occurs through lipid‐directed assembly of metal ions, their reduction and subsequent lipid‐directed growth to yield ultrathin (approximately 7 nm thick) quasi two‐dimensional gold nanocrystals.