引用本文:
刁玉霞, Dirk Rohde, 万立骏. β-联碳酰基类衍生物有序自组装膜的STM研究[J]. 物理化学学报,
2006, 22(06): 691-695.
doi:
10.1016/S1872-1508(06)60028-4
Citation: DIAO Yu-Xia, ROHDE Dirk, WAN Li-Jun. Ordered Self-assembled Monolayers of β-dicarbonyl Derivatives Studied by STM[J]. Acta Physico-Chimica Sinica, 2006, 22(06): 691-695. doi: 10.1016/S1872-1508(06)60028-4
Citation: DIAO Yu-Xia, ROHDE Dirk, WAN Li-Jun. Ordered Self-assembled Monolayers of β-dicarbonyl Derivatives Studied by STM[J]. Acta Physico-Chimica Sinica, 2006, 22(06): 691-695. doi: 10.1016/S1872-1508(06)60028-4
β-联碳酰基类衍生物有序自组装膜的STM研究
摘要:
在大气条件下, 利用扫描隧道显微镜研究了四个β-联碳酰基类衍生物在高定向裂解石墨(HOPG)表面的自组装结构. 研究分子的结构中均包含π电子共轭体系和烷基链. 实验研究了分子结构对自组装结构的影响, 并利用分子结构的变化实现了自组装膜结构的调控. 结果表明, 在甲苯溶剂中制备的这些自组装结构均长程有序, 分子间氢键和偶极相互作用是影响自组装膜结构变化的重要因素.
English
Ordered Self-assembled Monolayers of β-dicarbonyl Derivatives Studied by STM
Abstract:
The adsorption of four β-dicarbonyl derivatives on highly oriented pyrolytic graphite (HOPG) surface was studied by scanning tunneling microscopy (STM) in an ambient environment. All the molecules include π-conjugated part and alkyl chains in their chemical structures. The molecules were dissolved in toluene and a drop of the solution was deposited on HOPG to form self-assembled adlayer. The characteristic stripe-like structure in the self-assembled monolayer (SAM) on the high-resolution STM images of the compounds was observed. Different molecular structures led to different SAMs. It was found that noncovalent interactions such as hydrogen bonds and dipole-dipole interactions played an important role in the formation of different SAMs.
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