Corrected Figure 5:Corrected text in the manuscript (p. 9774, below Figure 5):(Figure Presented).Owing to the presence of flexible aryl-ether linkages in the polymer repeat unit, which impart a ductile property to the material, PI 1 exhibited the highest elongation with 18.4 ± 5.8%. In cases of the copolyimides PI 5 and PI 6, there was an increase in the tensile strength as compared to the homopolyimides PI 3 and PI 4. This is due to the increased ductility in cases of the copolymers. Furthermore, a high degree of branching often results in brittle polymers with a small degree of mechanical strain due to the lack of chain entanglements. However, the branched polyimides, PI 7 and PI 8, prepared in this study produced stable and free-standing films and showed 3.7 ± 0.6% and 4.6 ± 1.2% elongation at break. This may be attributed to the very high molar masses of the PIs obtained during polymerization. Thus, all of the polyimides showed excellent high tensile strength in the range of 57 ± 7 MPa to 98 ± 17 MPa and high Young’s modulus up to 3.7 ± 0.2 GPa. These exceptional mechanical strength values make these polyimides preferable candidates to be applied commercially. Corrected Table 4:(Table Presented).