Consecutive modular ligation as an access route to palladium containing polymers

Abstract

Polymers with palladium ligating moieties in the lateral chain were synthesized via consecutive CuAAC ligation. An in-depth catalyst screening was performed to optimize the reaction conditions. The obtained polymers, quantitatively loaded with palladium complexes, feature high molar masses of up to M_n = 30 000 g mol⁻¹. The complex formation is underpinned by model complex studies. 2,6-Bis(1-(p-tolyl)-1H-1,2,3-triazol-4-yl)pyridine was used as the model ligand. Reaction of the ligand with [Pd(cod)Cl₂] resulted in the corresponding palladium model complex.