Journal
JOURNAL OF NANOPARTICLE RESEARCH
Volume 2, Issue 2, Pages 157-164Publisher
SPRINGER
DOI: 10.1023/A:1010078521951
Keywords
colloids; digestive ripening; nanocrystals; size segregation; superlattices
Categories
Funding
- National Science Foundation [CTS9709764]
- Kansas NSF EPSCoR
- Kansas NASA EPSCoR
- University resources
- Kansas Agricultural Experiment Station
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A novel digestive ripening process is shown to narrow the particle size distribution from a highly polydisperse dodecanethiol ligated gold colloid. Unlike the Ostwald ripening process, the digestion occurs through transferring materials from large particles to small particles. Temperature-induced size segregation can further select the particle sizes. By using these two methods, highly ordered superlattices using nanocrystals as building blocks can be synthesized directly from a polydisperse colloid.
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