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Charge-induced distortion and stabilization of surface transfer doped porphyrin films
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View: Figures


Image of FIG. 1.
FIG. 1.

Evolution of the secondary electron cut-off and the occupied molecular orbitals from UPS as C (a) and CF (c) are deposited on ZnTPP. The vertical lines mark the secondary electron cut-off and HOMO positions. The energy level diagrams for both interfaces before contact are shown in (b) and (d).

Image of FIG. 2.
FIG. 2.

STM images (1 V, 0.1 nA) of (a) 18 nm × 18 nm monolayer of ZnTPP on clean Au(111) and (b) detail 5 nm × 5 nm of ZnTPP self-assembly with unit cell indicating an almost perfectly square unit cell with a = b = 1.4 nm, = (88 ± 1)°, = (34 ± 1)°, and = (66 ± 1)°.

Image of FIG. 3.
FIG. 3.

STM image (1 V, 0.2 nA) of 0.2 ML of C molecules evaporated on top of a predeposited ZnTPP monolayer on Au(111), showing both C single molecules and island formation. The underlying ZnTPP monolayer remains intact and ordered.

Image of FIG. 4.
FIG. 4.

STM image (0.7 V, 0.1 nA) of 0.2 ML CF on a full layer of pre-deposited ZnTPP on Au(111). The insets (a)–(c) show examples of CF-induced deformation of ZnTPP molecules. For comparison, an undistorted ZnTPP molecule from a self-assembled ML on Au(111) is depicted in (d).

Image of FIG. 5.
FIG. 5.

(a) STM image (2 V, 0.1 nA) containing CF on top of single-layer and double-layer ZnTPP. (b) Line profile along the highlighted line in (a) with the zero of the abscissa corresponding to the uppermost end of the line in Fig. 4(c) .


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Charge-induced distortion and stabilization of surface transfer doped porphyrin films