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Schematic of (a) a cyclodextrin (CD), (b) a molecular tube (MT), and (c) formation of DDT-CD SAM on gold, with subsequent immobilization of MTs on the DDT-CD SAM.
Advancing contact angles for DDT SAM (a) and (c), and for DDT-CD SAM (b) and (d). The lower figures (c) and (d) show the contact angles after immersion into the MT solution .
Adsorption kinetics of (a) a MT on DDT-CD SAM (circle symbols) and (b) a MT on the DDT SAM (square symbols) obtained by SPR measurements. The concentration of the MT solution was . The up arrow indicates injection of the MT solution and the down-arrow indicates injection of water in order to rinse the substrate.
(a) STM image of DDT-CD SAM formed on at and at . (b) AFM image of MTs immobilized on the DDT-CD SAM in tapping mode at .
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