495402-49-8Relevant articles and documents
Synthesis of azobenzene substituted tripod-shaped bi(p-phenylene)s. Adsorption on gold and CdS quantum-dots surfaces
Hierrezuelo, Jesús,Rico, Rodrigo,Valpuesta, María,Díaz, Amelia,López-Romero, J. Manuel,Rutkis, Martins,Kreigberga, Jana,Kampars, Valdis,Algarra, Manuel
, p. 3465 - 3474 (2013/04/24)
We report here the synthesis of several tripod-shaped oligo(p-phenylene)s with legs composed of two phenylene units. Each leg is end-capped with a thioacetate group for adhesion to metallic surfaces. An azobenzene chromophore group is present on the functional arm of the tripod. The key step in the synthesis is the Pd-catalyzed Suzuki cross-coupling reaction of the silicon derivative core molecule with substituted phenyl moieties and azobenzene derivatives. Gold surfaces prepared by thermal evaporation and CdS quantum-dots surfaces were covered by the tripod-shaped molecules. Modified surfaces were characterized by atomic force microscopy (AFM), fluorescence, and Kelvin Probe analyses.