Pressure Sensitive Adhesives (PSA) are soft polymer materials which instantly stick on almost any surface. The adhesives properties of these materials are mainly based on their rheological behavior and, thus on the chemical architecture of the polymer chains. Commercial PSAs are usually composed of lightly crosslinked and highly entangled polymer chains, the molecular structure of which is adjusted to get a good peeling and shear resistance (Creton, C. MRS Bulletin, 2003). The specificity of my project is to investigate the rheological and adhesive properties of short polymer chains functionalized by urea groups. The strong hydrogen bonding interactions between these urea moieties increase strongly the dissipative properties upon deformation, while keeping a low viscosity in non polar solvents (Courtois, J. et al, Adv. Funct. Mater., 2010). The viscoelastic and adhesive properties of linear poly(butylacrylate) chains center-functionalized by bis- or tri-urea stickers were systematically studied. The molecular mechanisms, which govern the rheological behavior at small and large deformation, were identified by modifying the chemical structure of the polymer chains in a systematic way. Based on these results, more complex molecular architectures were then synthesized in order to improve the adhesive properties. The promising results from these new systems highlight the high potential of the supramolecular chemistry for the elaboration of new PSAs.