Temperature Dependent Structure of Poly(caprolactone) Supramolecular Polymer with Ureidopyrimidinone End Groups

Environmental changes such as temperature, pH or solvent can cause a great change in dynamics of hydrogen bonding and consequently in physical properties of supramolecularsystems based on hydrogen bonding[1]. Any change in molecular weight and chain structure will lead to drasticchanges in rheological properties. Therefore, rheological measurements are reliable in technique in studying aggregation behavior of supramolecular systems[2]. Also,temperature-dependent measurements produce important information on the chain dynamics itself as well as on thetemperature-dependent association of the individual polymeric chain end[3]. Here, the temperature dependent structural changes of a supramolecular PCL functionalized with stronglydimerising UPy(ureidopyrimidinone) end groups(via Hbonding array formation) is reported.