Reaction of alkylamine surfactants with carbon dioxide: relevance to nanocrystal synthesis

Nataly Belman, Jacob N. Israelachvili, Youli Li, Cyrus R. Safinya, Joel Bernstein, Yuval Golan

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Exposure of tetradecylamine, hexadecylamine, and octadecylamine to CO 2 results in their transformation to alkylammonium alkylcarbamate (AAAC) pairs, which we find is a major source of irreproducibility in nanoparticle synthesis. Controlled exposure to CO 2 allows for highly uniform, ultranarrow ZnS nanorods coated with tetradecylamine to be reproducibly obtained in a single step. The crystal structures of the alkylamines and their AAAC analogs were investigated by powder X-ray diffraction and their isostructural three-dimensional unit cells are reported.

Original languageEnglish
Pages (from-to)2088-2093
Number of pages6
JournalNano Letters
Volume9
Issue number5
DOIs
StatePublished - 13 May 2009

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