TY - JOUR A1 - Füchsel, Gernot A1 - Klamroth, Tillmann A1 - Dokic, Jadranka A1 - Saalfrank, Peter T1 - On the electronic structure of neutral and ionic azobenzenes and their possible role as surface mounted molecular switches T2 - The journal of physical chemistry : B, Condensed matter, materials, surfaces, interfaces & biophysical chemistry N2 - We report quantum chemical calculations, mostly based on density functional theory, on azobenzene and substituted azobenzenes as neutral molecules or ions, in ground and excited states. Both the cis and trans configurations are computed as well as the activation energies to transform one isomer into the other and the possible reaction paths and reaction surfaces along the torsion and inversion modes. All calculations are done for the isolated species, but results are discussed in light of recent experiments aiming at the switching of surface mounted azobenzenes by scanning tunneling microscopes. Y1 - 2006 UR - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/47035 SN - 1520-6106 VL - 110 IS - 33 SP - 16337 EP - 16345 PB - Soc. CY - Washington ER -