Abstract

Scanning tunneling microscopy was performed on the three types of cyclodextrin (CyD) inclusion complexes; (1) α-CyD-penta-ethylene glycol, (2) G1- α-CyD-H20 (G1: 6-0-a-D-glucopyranosyl), and (3) β-CyD-ACA (ACA: adamantanecarboxylic acid), which were self-assembled on a highly oriented pyrolytic graphite surface. The observed structures were different from those of the three-dimensionally grown crystals determined by X-ray diffraction method, and their structures were different from each other. The obtained results strongly suggests not only that the included guest compounds or the modified CyD structures influence the molecular interactions between CyDs, but also the possibility of the control of the ordering of self-assembly of CyD molecules as a nanoscience technology.

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