Tuning electronic properties of metallic atom in bondage to a nanospace

The possibility of modulating the electronic configurations of the innermost atoms inside a nanospace, nano sheath with chemical modification was investigated using synchrotron X-ray photoelectron spectroscopy. Systems of definite nanostructures were chosen for this study. Systematic variations in energy, intensity, and width of π* and σ* O 1s core level spectra, in absorption characteristics of C 1s→π* transition, in photoabsorption of pre-edge and resonance regions of the Gd 4d→4f transition, were observed for Gd@C82 (an isolated nanospace for Gd), Gd@C82(OH)12 (a modified nanospace for Gd), and Gd@C82(OH)22 (a differently modified nanospace for Gd), and the reference materials Gd-DTPA (a semi-closed space for Gd) and Gd2O3. A sandwich-type electronic interaction along [outer modification group]−[nano sheaths]−[inner metallic atom] was observed in the molecules of modifications. This makes it possible to control electron-donation directions, either from the innermost metallic atom toward the outer nano ...