“…In general, pristine PI is used as a polymer matrix because it has good mechanical properties, in addition to high chemical and thermal stability, but the dielectric constant ε ≈ 3.5, 74,75 and the dielectric permittivity has been several times enhanced (28.42 times, 72 26.6 times, 75 4 times, 76 Low dielectric constants materials are also equally important in the field of modern IC to minimize both cross-talk noise and resistance capacitance delay. 81 Recently, various methods have been introduced to develop PIs with low and ultra-low dielectric constant materials, 82 in particular, well-designed organic-inorganic hybrid materials systems have been gaining attraction significantly for microelectronics because of their utilization in ICs 83 and also systems with pore voids or air gap were used. Although nanotubes filled composites exhibit better property in aligned direction, in order to minimize this anisotropic behavior of the composites, mesoporous silica filler is used as smart inorganic filler, which has unique properties such as uniformly distributed mesopores, high pore volume, and very large surface areas.…”