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Size‐Controlled Synthesis and Optical Properties of Monodisperse Colloidal Magnesium Oxide Nanocrystals
Author(s) -
Moon Hoi Ri,
Urban Jeffrey J.,
Milliron Delia J.
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200902056
Subject(s) - dispersity , nanocrystal , trioctylphosphine oxide , oxide , materials science , colloid , alkaline earth metal , magnesium , catalysis , chemical engineering , quantum yield , luminescence , inorganic chemistry , nanotechnology , metal , chemistry , polymer chemistry , organic chemistry , optics , metallurgy , optoelectronics , physics , engineering , extraction (chemistry) , fluorescence
MgO gets discrete : Monodisperse nanocrystals of the alkaline earth metal oxide MgO can be prepared by direct colloidal synthesis (see image). Diameter control (2–8 nm) is achieved by incorporating catalytic amounts of water into the organic reaction medium. Although trioctylphosphine oxide is present during the reaction, the resulting nanocrystals are capped primaryly by benzyl ether. Blue luminescence is observed with a quantum yield up to approximately 20 %.