Structural Properties of Tetra-tert-butyl Zinc(II) Phthalocyanine Isomers on a Au(111) Surface
Structural Properties of Tetra-tert-butyl Zinc(II) Phthalocyanine Isomers on a Au(111) Surface
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Au(111) 表面四叔丁基锌(II)酞菁异构体的结构性质
DOI：
10.1021/jp901193h
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发表时间：
2009-07-02
影响因子：
3.7
通讯作者：
Gao, H. -J.
中科院分区：
文献类型：
--
作者：
Deng, Z. T.;Guo, H. M.;Gao, H. -J.
通过扫描隧道显微镜（STM）研究了四叔丁基锌（II）酞菁（TB-ZnPc）异构体混合物在Au（111）表面上的自组装行为。酞菁锌(II)的四个外围苯环上添加了四个叔丁基，使平面分子具有三维结构。每个叔丁基有两个可能的取代位置，产生结构异构体的混合物，很容易通过 STM 识别。根据制备程序，单层体系中可以区分两种不同的结构。一种是准有序结构，其中分子以最密堆积方式排列，第二种是有序结构，其中分子并排排列。后者中更有序的分子网络被认为是 TB-ZnPc 异构体统一的结果。
The self-assembly behavior of the mixture of tetra-tert-butyl zinc(II) phthalocyanine (TB-ZnPc) isomers on a Au(111) surface has been investigated by means of scanning tunneling microscopy (STM). Four tert-butyl groups are added to four peripheral benzene rings of zinc(II) phthalocyanine, which gives the planar molecules a three-dimensional structure. Two possible substituting locations for each tert-butyl group result in a mixture of structural isomers, which are easily identified by STM. Two different structures have been distinguished in the monolayer regime depending on the preparation procedure. One is a quasi-ordered structure whereby the molecules are arranged in the closest-packed way, and the second is an ordered structure in which the molecules are arranged side by side. The more ordered molecular network in the latter is considered to be a consequence of unification of TB-ZnPc isomers.