Self-Assembled Mono- and Multilayers on Gold from 1,4-Diisocyanobenzene and Ruthenium Phthalocyanine

Vincent Huc (1) , Jean-Philippe Bourgoin (1) , Christophe Bureau (2) , Françoise Valin (2) , Gilbert Zalczer (3) , Serge Palacin (1)

1 SCM - Service de Chimie Moléculaire
2 SRSIM - Service de Recherche sur les Surface et l'Irradiation de la Matière
3 SPEC - UMR3680 - Service de physique de l'état condensé

Self-assembled monolayers of 1,4-diisocyanobenzene on gold were used to bind ruthenium phthalocyanines to the surface by axial ligation of the macrocycle with isocyanide groups pointing out from the SAM. The 1,4-diisocyanobenzene SAM and the RuPc-1,4-diisocyanobenzene bilayer were characterized by ellipsometry, IRRAS, XPS, and SPM. The grafting of RuPc to the SAM is stable. The thickness of the film increases from 10 to 15 Å upon RuPc ligation. IRRAS reveals that both ends of the 1,4-diisocyanobenzene are affected by the NC to metal interaction occurring at the other end. XPS indicates that each RuPc macrocycle covers ~12 1,4-diisocyanobenzene molecules in the bilayer.

Domaines: Matériaux

Vincent Huc, Jean-Philippe Bourgoin, Christophe Bureau, Françoise Valin, Gilbert Zalczer, et al.. Self-Assembled Mono- and Multilayers on Gold from 1,4-Diisocyanobenzene and Ruthenium Phthalocyanine. Journal of Physical Chemistry B, 1999, 103, pp.10489-10495. ⟨10.1021/jp992438v⟩. ⟨cea-01057038⟩