title: Shape control of CdSe nanocrystals with zinc blende structure.
abstract: Systematically shape-controlled synthesis of inorganic nanocrystals has attracted increasing attention recently for both fundamental and technological interest. The shape evolution of CdSe nanocrystals with wurtzite structure in a unified method has been previously well studied, while the study on shape evolution of CdSe nanocrystals with zinc blende structure still remains challenging. Here, we demonstrate a systematic shape variation of zinc blende CdSe nanocrystals in a modified organometallic approach, in which distinct shapes of cube-shaped, sphere-shaped, tetrahedron-shaped, and branched CdSe nanocrystals with high yield and good uniformity are obtained. The crucial factor that influences the shape-controlled process is the reactive temperature. This wide variation of shapes provides important information about the growth of CdSe nanocrystals, and it can also help in the shape-controlled synthesis of other nanocrystals that are bound with uniform crystal planes.
authors.affiliation: State Key Laboratory of New Ceramics and Fine Processing; Department of Chemistry, Tsinghua University, Beijing, 100084 PR China.
authors.forename: Liping
authors.initials: L
authors.lastname: Liu
authors.forename: Zhongbin
authors.initials: Z
authors.lastname: Zhuang
authors.forename: Ting
authors.initials: T
authors.lastname: Xie
authors.forename: Yang-Gang
authors.initials: YG
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Li
authors.forename: Qing
authors.initials: Q
authors.lastname: Peng
authors.forename: Yadong
authors.initials: Y
authors.lastname: Li