In Situ Scanning Tunneling Microscopy of Solvent-Dependent Chiral Patterns of 1,4-Di[4-N-(trihydroxymethyl)methyl carbamoylphenyl]-2,5-didodecyloxybenzene Molecular Assembly at a Liquid/Highly Oriented Pyrolytic Graphite Interface
In Situ Scanning Tunneling Microscopy of Solvent-Dependent Chiral Patterns of 1,4-Di[4-N-(trihydroxymethyl)methyl carbamoylphenyl]-2,5-didodecyloxybenzene Molecular Assembly at a Liquid/Highly Oriented Pyrolytic Graphite Interface
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原位扫描隧道显微镜观察液体/高度取向热解石墨界面上 1,4-二[4-N-(三羟甲基)甲基氨基甲酰基苯基]-2,5-二十二烷氧基苯分子组装的溶剂依赖性手性模式
DOI：
10.1021/jp9089613
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发表时间：
2010-06
影响因子：
3.7
通讯作者：
Zhang, Xu
中科院分区：
文献类型：
--
作者：
Chen, Ting;Zhang, Rong-Ben;Wan, Li-Jun;Wang, Dong;Zhou, Qi-Long;Zhang, Xu
以四氢呋喃（THF）、1-苯基辛烷（PO）、正辛醇和1，2，4-三氯苯（TCB）为溶剂，采用原位扫描隧道显微镜研究了1，4-二[4-N-（三羟甲基）甲基氨基甲酰基苯基]-2，5-双十二烷氧基苯（DTCD）在高取向热解石墨（HOPG）表面自组装吸附层手性的溶剂效应.在这些溶剂中获得不同的手性模式，表明DTCD的手性组装是溶剂依赖性的。以四氢呋喃或环氧丙烷为溶剂，观察到风车形四聚体单元的手性模式。与此相反，外消旋的层状结构，揭示在1-辛醇。正辛醇分子的共吸附对外消旋层状结构的形成有重要贡献。通过热退火除去正辛醇分子，观察到从外消旋层状结构到基于四聚体的手性模式的结构转变。当TCB作为溶剂时，在TCB/HOPG界面处形成手性网状结构。结果...
Solvent effect on chirality of 1,4-di[4-N-(trihydroxymethyl)methyl carbamoylphenyl]-2,5-didodecyloxybenzene (DTCD) self-assembled adlayer on highly oriented pyrolytic graphite (HOPG) is investigated by in situ scanning tunneling microscopy using tetrahydrofuran (THF), 1-phenyloctane (PO), 1-octanol, and 1,2,4-trichlorobenzene (TCB) as solvent. Different chiral patterns are acquired in these solvents, suggesting that the chiral assembly of DTCD is solvent-dependent. With use of THF or PO as solvent, chiral patterns with windmill-shaped tetramer units are observed. In contrast, a racemic lamellar structure is revealed in 1-octanol. The coadsorption of 1-octanol molecules makes an important contribution to the formation of racemic lamellar structure. A structure transition from racemic lamellar structure to tetramer-based chiral patterns is observed with removal of 1-octanol molecules by thermal annealing. When TCB is used as solvent, a chiral meshy structure is formed at the TCB/HOPG interface. The results ...