Vídeos SEBBM

Webinar «Working together organic synthesis and on-surface chemistry towards the generation of unknown molecules: acenes and cyclacenes»

(La química, una mano tendida a la sociedad)
Datos del evento
07/04/2022 a las 12:30 am
Virtual (online)

Conferenciante: Fátima García Melo (QO). Profesora Ayudante Doctora. Facultad de Ciencias Químicas, UCM.

Moderador: José Santos Barahona. Facultad de Ciencias Químicas, UCM.

Acenes are intriguing molecules with unique electronic properties. The difficulties in their preparation, owing to low stability under ambient conditions, are evident from the scarce successful syntheses of long unsubstituted acenes, in spite of the great attention they have attracted. In this contribution we describe the combined efforts of organic synthesis and on-surface chemistry towards the preparation of large acenes. An iterative sequence of aryne cycloadditions was used to synthesize stable epoxy precursors which were on-surface deoxygenated to obtain tetracene and hexacene1 and more recently, decacene for the first time. These acenes were characterized with submolecular resolution by scanning tunneling microscopy (STM). We will discuss our recent efforts to apply this methodology to obtain larger acenes and cyclic derivatives.