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Mixing an Aqueous Suspension of Pd or Au Nanocrystals with a Less Polar Solvent Can Cause Changes to Size, Morphology, or Both
Author(s) -
Lim Byungkwon,
Yu Taekyung,
Park Jinho,
Zheng Yiqun,
Xia Younan
Publication year - 2011
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.201101666
Subject(s) - nanocrystal , solvent , tetrahydrofuran , aqueous solution , morphology (biology) , particle size , colloid , chemical engineering , coalescence (physics) , suspension (topology) , acetone , polar , materials science , aqueous suspension , chemistry , nanotechnology , organic chemistry , mathematics , astronomy , homotopy , astrobiology , physics , biology , pure mathematics , engineering , genetics
Easy control : Small Pd and Au nanocrystals exhibited a drastic change in size and/or morphology when their aqueous suspensions were mixed with a solvent (e.g., acetone or tetrahydrofuran) less polar than water. The morphological changes occurred through particle coalescence, which was triggered by the abrupt reduction in colloidal stability upon partial solvent exchange.