“…The TG-DTG curves indicates the weight loss of the oligomers in two steps: First, at a temperature of around 372 and 345 C is due to degradation of the backbone chain of the polyindole skeleton [30,35,42,43]. The first weight loss found in PIn was around 372 C showing the weight loss of 27.20% of the oligomer, whereas the catalyzed product i.e.…”