The present dissertation investigates two polyacrylate (PA) systems in dilute aqueous solutions, long linear PA-chains and spherical polyacrylate brushes (SPBs). Investigation of these two systems addresses their specific interactions with Ag+ ions and their potential use in preparing silver nanoparticles (Ag-NPs). Formation of silver acrylate complexes in both linear PA-chains and SPBs were analysed by means of static and dynamic light scattering (SLS/DLS). Based on numerous SLS/DLS experiments made with each PA morphology, phase diagrams which describe the solubility behaviour of Ag+-PA and Ag+-SPB solutions were deduced. The interaction pattern of linear PA-chains with monovalent Ag+ ions depends on the ratio of [Ag+]/[COO-] disclosing a diverse set of Ag+-PA entities including homogeneous low density aggregates, dense unstable and dense stable aggregates. The solubility behaviour of Ag+-SPB solutions is less complex and comprises a line where shrinking of the PA-shell reaches the state of a fully collapsed shell and a second line where coagulation of Ag+-SPBs occurs. Both lines are well separated by a regime of stable Ag+-SPB with a fully shrunk PA-layer. Based on the investigated properties of both Ag+-PA and Ag+-SPB solutions, Ag-NP formation induced by exposure of both systems to UV-light, without application of an additional reducing agent, was analysed. In case of linear PA-chains dense unstable Ag+-PA aggregates lead to assemblies of Ag-NPs upon exposure to UV-light. Dense stable Ag+-PA aggregates lead to entities with predominantly single Ag-NPs. Ag-NP formation generated in SPB solutions showed that independent of the brush parameters or of the regime of Ag+ concentration a low amount of Ag-NPs per SPB particle similar in size and amount were generated. The decoration of SPB with Ag-NPs has been enhanced successfully by applying an additional chemical reducing agent.