Oriented growth of porphyrin-based molecular wires on ionic crystals analysed by nc-AFM.
Oriented growth of porphyrin-based molecular wires on ionic crystals analysed by nc-AFM.
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DOI:
10.3762/bjnano.2.4
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发表时间:
2011
影响因子:
3.1
通讯作者:
Diederich F
中科院分区:
文献类型:
--
作者:
Glatzel T;Zimmerli L;Kawai S;Meyer E;Fendt LA;Diederich F
The growth of molecular assemblies at room temperature on insulating surfaces is one of the main goals in the field of molecular electronics. Recently, the directed growth of porphyrin-based molecular wires on KBr(001) was presented. The molecule–surface interaction associated with a strong dipole moment of the molecules was sufficient to bind them to the surface; while a stabilization of the molecular assemblies was reached due to the intermolecular interaction by π–π binding. Here, we show that the atomic structure of the substrate can control the direction of the wires and consequently, complex molecular assemblies can be formed. The electronic decoupling of the molecules by one or two monolayers of KBr from the Cu(111) substrate is found to be insufficient to enable comparable growth conditions to bulk ionic materials.
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