"Contact voltage" in nanoparticle/molecule connections.
This work presents conclusive evidence that connecting Pt and Co nanoparticles stabilized by an aluminum-organic shell with molecular spacers interacting with this shell can induce notable changes in the electronic structure of the metal. X-ray absorption spectroscopy measurements at the Al K-, the Pt L(III)-, and the Co K-edge provide consistent evidence for this effect. The changes induced by cross-linking with an acidic spacer are discussed in detail as an example to elucidate the mechanism of this effect. It turns out that a reconfiguration of the protection shell that occurs upon networking is responsible for the observed changes.
Modrow
H
H
Physikalisches Institut der Universität Bonn, Nussallee 12, 53115 Bonn, Germany. modro@physik.uni-bonn.de
Modrow
S
S
Hormes
J
J
Waldöfner
N
N
Bönnemann
H
H