RESUMEN
Single-molecule magnets based on lanthanide double-deckers are attracting significant attention due to their unrivaled single-ion anisotropy. To exploit their fascinating electronic and magnetic properties in devices for information storage or spin transport, studies on the preservation or variation of electronic and magnetic functionalities upon adsorption on surfaces are necessary. Herein, we introduced a comprehensive scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) surface science study, complemented by density functional theory (DFT) simulations, of a recently synthesized single-molecule magnet based on porphyrazine deckers, conveniently equipped with ethyl moieties to make them soluble and sublimable. We demonstrated that the double-decker species were intactly adsorbed on Au(111), Ag(111), and Cu(111) in a flat-on fashion and self-assembled in hexagonal close-packed layers. Systematic multi- and monolayer XPS was performed on the surface-confined species, confirming the preservation of the electronic properties of the ligands and the lanthanide center upon adsorption.
RESUMEN
The authors report on the clinical and morphological features of patients who had been previously treated for toxic adenoma with different doses of 131I isotope, and were then operated on for cold nodule. Progressive pseudoatypic and Hürthle-cell transformations, which are difficult to distinguish from different-type thyroid carcinomas, were revealed in one and a solid anaplastic carcinoma in another of the five patients during histological examination of operative specimens in serial sections. On the basis of these findings the authors support the function-protective operative treatment of single toxic adenomas, although the causal relationship between isotope treatment and consecutive carcinoma can not be verified unanimously.