Abstract
The rapid development of on‐surface synthesis provides a unique approach toward the formation of carbon‐based nanostructures with designed properties. Herein, we present the on‐surface formation of CN‐substituted phenylene vinylene chains on the Au(111) surface, thermally induced by annealing the substrate stepwise at temperatures between 220 °C and 240 °C. The reaction is investigated by scanning tunneling microscopy and density functional theory. Supported by the calculated reaction pathway, we assign the observed chain formation to a Knoevenagel condensation between an aldehyde and a methylene nitrile substituent.
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