TY  - JOUR
A1  - Wirth, Jonas
A1  - Hatter, Nino
A1  - Drost, Robert
A1  - Umbach, Tobias R.
A1  - Barja, Sara
A1  - Zastrow, Matthias
A1  - Rück-Braun, Karola
A1  - Pascual, Jose Ignacio
A1  - Saalfrank, Peter
A1  - Franke, Katharina J.
T1  - Diarylethene Molecules on a Ag(111) Surface: Stability and Electron-Induced Switching
JF  - The journal of physical chemistry : C, Nanomaterials and interfaces
N2  - Diarylethene derivatives are photochromic molecular switches, undergoing a ring-opening/-closing reaction by illumination with light. The symmetry of the closed form is determined by the WoodWard Hoffinann rules according to which the reaction proceeds by corirotatory rotation -in that case. Here, we show by a cOrnbined approach of scanning tunneling microscopy (STM) and density functional theory (DFT) calculations that the Open isomer of 4,4'-(4,4'-(perfluorocydopent-1-ene-1,2-diyl)bis(5-methyl-thiophent-4,2,4-dipyridine) (PDTE) retains its open form upon adsorption on a Ag(111) surface. It caribe switched into a closed form, which we identify as the digrotatOly cydization product, by controlled manipulation 'With the STM tip, Evidence of an electric-field dependent switching-process 'is interpreted on the basis of a Simple electroStatic Model, which suggests that the reaction proceedS via an "upright" intermediate state. This pathway thus strongly differs from the switching reaction in solution.
Y1  - 2015
U6  - https://doi.org/10.1021/jp5122036
SN  - 1932-7447
VL  - 119
IS  - 9
SP  - 4874
EP  - 4883
PB  - American Chemical Society
CY  - Washington
ER  -