Dissociation of iridium(III) phosphorescent emitters upon adsorption on Cu(110) revealed by scanning tunneling microscopy
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(Color online) (a) Molecular structure of the iridium(III) complexes. (b) STM image of the nanopatterned surface used. Images are rotated such that the  direction is vertical. reconstructed oxidized areas can clearly be distinguished, separated by bare Cu stripes running along the  direction (; ). (c) A corresponding ball model of the surface shown in b. In the ball model the yellow atoms represent the added rows of Cu on top of the underlying Cu(110) lattice. The added rows of Cu have an O atom between them represented by the small blue spheres.
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(Color online) (a) Typical STM image after vacuum deposition of N842 complexes on a partly oxidized Cu(110) surface. Adsorption of molecules occurs almost exclusively on the bare Cu rows. We observe two clearly distinct protrusions (labeled A and B) with different apparent heights. (; ) (b) A histogram of the height distribution reveals that A and B have a apparent heights of 1.8 and , respectively. (c) STM image obtained at with mobile species present (; ). (d) image obtained at (; ). Features corresponding to isolated ligands are clearly visible at , as indicated by C.
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