Q50 model

SEC (Size Exclusion Chromatopgraphy) experiments were carried out using a modular instrument consisting of a Waters Model 510 pump, a Waters Model U6K sample injector, a Waters Model 401 differential refractometer (Waters Corporation, Milford, MA, USA), and a set of three μ-styragel columns with a continuous porosity range from 10⁶ to 10³ Å. The columns were housed in an oven thermostatted at 40 °C. THF or CHCl₃ was the carrier solvent at a flow rate of 1 mL min⁻¹. The instrument was calibrated with polystyrene standards covering the molecular weight range from 3000 up to 600,000. ¹H NMR spectra were recorded in chloroform-d at 30 °C with a Varian Unity Plus 300/54 NMR spectrometer (Varian, Inc., Palo Alto, CA, USA). Thermogravimetric analysis (TGA) experiments were carried out using a Q50 Model of TA Instruments (New Castle, DE, USA) employing samples of approximately 10 mg. The heating rate was adjusted to 10 °C min⁻¹. Differential Scanning Calorimetry (DSC) experiments were conducted using a 2910 modulated DSC model from TA Instruments. The samples were heated at a rate of 10 °C/min from −30 to 180 °C. The second heating results were obtained in all cases.