Cobley Claire M, Rycenga Matthew, Zhou Fei, Li Zhi-Yuan, Xia Younan
Department of Biomedical Engineering, Washington University, St. Louis, MO 63130, USA.
Angew Chem Int Ed Engl. 2009;48(26):4824-7. doi: 10.1002/anie.200901447.
Two-faced nanocrystals: Rapid addition of a second aliquot of silver nitrate during a polyol synthesis led to the formation of anisotropically truncated octahedrons as a result of oxidative etching and overgrowth of silver nanocubes. Three adjacent faces of the nanocube grew more rapidly than the three other faces, generating a non-centrosymmetric structure (see picture).
在多元醇合成过程中快速添加第二份硝酸银,由于银纳米立方体的氧化蚀刻和过度生长,导致形成各向异性截断八面体。纳米立方体的三个相邻面生长速度比其他三个面更快,从而产生非中心对称结构(见图)。