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


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.

SUBMITTER: Au-Yeung KH 

PROVIDER: S-EPMC9298206 | biostudies-literature |

REPOSITORIES: biostudies-literature

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