of the sample (2–3 mg) was taken in a standard
alumina pan with an alumina lid with a pin hole at the middle. An
empty crucible was used as the reference. Thermogravimetric Analysis
(TGA)-DSC analyses were carried out by using a NETZSCH STA 449 F1
Jupiter instrument. The samples were heated from room temperature
to 300 °C at a heating rate of 5 °C min–1 under nitrogen atmosphere with a flow rate of 60 mL min–1 protective and 40 mL min–1 purge gases.