Document Detail


Charged gold nanoparticles in non-polar solvents: 10-min synthesis and 2D self-assembly.
MedLine Citation:
PMID:  20392108     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
We report a fast and highly reproducible chemical synthesis method for colloidal gold nanoparticles which are negatively charged in nonpolar solvents and coated with hydrophobic organic molecules. If a hexane droplet containing charged gold nanoparticles is mixed with a larger toluene droplet, nanoparticles immediately float to the air-toluene interface and form a close-packed monolayer film. After evaporation of the solvent molecules, the monolayer film of nanoparticles can be deposited to any substrate without any limit in size. The synthesis does not require a postsynthesis cleaning step, since the two immiscible liquid phases separate the reaction byproducts from gold nanoparticles and a minimal amount of coating molecules is used.
Authors:
Matthew N Martin; James I Basham; Paul Chando; Sang-Kee Eah
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Langmuir : the ACS journal of surfaces and colloids     Volume:  26     ISSN:  1520-5827     ISO Abbreviation:  Langmuir     Publication Date:  2010 May 
Date Detail:
Created Date:  2010-05-12     Completed Date:  2010-08-17     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9882736     Medline TA:  Langmuir     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7410-7     Citation Subset:  IM    
Affiliation:
Department of Physics, Applied Physics, and Astronomy, Rensselaer Polytechnic Institute, Troy, New York 12180, USA.
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MeSH Terms
Descriptor/Qualifier:
Acetone / chemistry
Colloids / chemical synthesis,  chemistry
Gold / chemistry*
Hexanes / chemistry*
Hydrophobicity
Membranes, Artificial
Metal Nanoparticles / chemistry*
Particle Size
Solvents / chemistry
Surface Properties
Toluene / chemistry*
Water / chemistry
Chemical
Reg. No./Substance:
0/Colloids; 0/Hexanes; 0/Membranes, Artificial; 0/Solvents; 108-88-3/Toluene; 67-64-1/Acetone; 7440-57-5/Gold; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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