Document Detail


Multigram scale, solventless, and diffusion-controlled route to highly monodisperse PbS nanocrystals.
MedLine Citation:
PMID:  16471585     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
High-quality PbS nanocrystals were produced in multigram-scale quantities through a solventless, heterogeneous, and relatively green route. The heterogeneous nature of this reaction allows one to limit the diffusion in the system, allowing for unprecedented monodispersity and quality of the product demonstrated by a full-width at half-maximum of the photoluminescence peak (PL fwhm) as low as 52 meV, a Stokes shift as low as 10 meV, and a quantum yield (QY) of 40%. The growth of the nanocrystals is interpreted in the framework of a diffusion-controlled Ostwald growth in conditions of strong supersaturation.
Authors:
Ludovico Cademartiri; Jacopo Bertolotti; Riccardo Sapienza; Diederik S Wiersma; Georg von Freymann; Geoffrey A Ozin
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The journal of physical chemistry. B     Volume:  110     ISSN:  1520-6106     ISO Abbreviation:  J Phys Chem B     Publication Date:  2006 Jan 
Date Detail:
Created Date:  2006-02-13     Completed Date:  2006-08-14     Revised Date:  2007-03-23    
Medline Journal Info:
Nlm Unique ID:  101157530     Medline TA:  J Phys Chem B     Country:  United States    
Other Details:
Languages:  eng     Pagination:  671-3     Citation Subset:  -    
Affiliation:
Materials Chemistry Research Group, Lash Miller Chemical Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6 Canada.
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