Products Cited in Publications Worldwide Rational Molecular Design for Self-Assembly Tuning of Organic Molecular Layers and Metal-Organic Networks on Metal Surfaces

Rational Molecular Design for Self-Assembly Tuning of Organic Molecular Layers and Metal-Organic Networks on Metal Surfaces

Wisman II, David L

Abstract

Surface-assisted self-assembly of architectures is showing promise for the development of more efficient technologies and processes related to the fields of organic electronics, photovoltaics and heterogeneous catalysis. The detailed understanding of the intermolecular and molecule-substrate interactions that are responsible for resulting surface architectures is necessary for the rational design molecular systems. The experiments detailed within this thesis show that through careful tuning of organic molecules significant changes are observed in the 2-D self-assembly, 3-D stacking, or metal-organic coordination properties. These ideas are first demonstrated by tuning the intermolecular interactions of organic molecules on metal surfaces. It is shown that the 2-D self-assembly can be controlled through the functionalization of the parent molecule. In one study the addition of bulky methoxy groups was shown to modify 2-D surface structure, which also led to a change in the 3-D stacking of the molecules due to the loss of overlap of the π systems of the molecules in the layers below. Modification of the self-assembly is also investigated through changing of the intermolecular hydrogen bonding potential in a series of molecules with similar properties. Here it was found that the stability and long-range order can be tuned through the introduction of functional groups with a higher electro-negativities.

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