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Self‐Organization of Spherical, Core–Shell Palladium Aggregates by Laser‐Induced and Thermal Decomposition of [Pd(PPh 3 ) 4 ]
Author(s) -
Ye Enyi,
Tan Hua,
Li Shuping,
Fan Wai Yip
Publication year - 2006
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.200503408
Subject(s) - thermal decomposition , palladium , core (optical fiber) , decomposition , materials science , shell (structure) , metal , thermal , nanocrystal , nanoparticle , irradiation , laser , thermal treatment , chemical engineering , nanotechnology , chemistry , composite material , optics , metallurgy , catalysis , organic chemistry , physics , thermodynamics , engineering , nuclear physics
Metal in the middle: Uniform, spherical, core–shell aggregates (100±20 nm; see picture) are obtained by photodecomposition of [Pd(PPh 3 ) 4 ] to form the metal core, followed by aggregation of smaller Pd nanocrystals and free phosphanes, produced by thermal decomposition of the remaining precursor, around this core. Prolonged irradiation or thermal decomposition alone yields only the core structure or the shell structure, respectively. This enables the nanoparticle structure to be tuned.