Results
Title

On‐Surface Formation of Cyano‐Vinylene Linked Chains by Knoevenagel Condensation.

Authors

Au‐Yeung, Kwan Ho; Kühne, Tim; Becker, Daniel; Richter, Marcus; Ryndyk, Dmitry A.; Cuniberti, Gianaurelio; Heine, Thomas; Feng, Xinliang; Moresco, Francesca

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.

Subjects

SCANNING tunneling microscopy; CONDENSATION; DENSITY functional theory; SCANNING probe microscopy

Publication

Chemistry - A European Journal, 2021, Vol 27, Issue 69, p17336

ISSN

0947-6539

Publication type

Academic Journal

DOI

10.1002/chem.202103094