Synthesis of Poly[(cyanophenyl)silylene-p-phenylene]s as Patternable Ceramics Precursors

Abstract

əɇʀɻ‫ك‬ǹɃɱɧɋȷɁ֭‫د‬ΧǷǦǵǽɥɲ =ȿȪɖɝȯɓɳ ȿɲɴɻ-p-ɝȯɓɴɻ? ֢ǽ۰༔Polysilylene-p-phenylenes bearing cyanophenyl groups were prepared and their application to patternable precursors of conducting ceramic films was studied. When polymer films were irradiated in air through a photomask, then heated at high temperature, only the non-irradiated area was converted to conducting ceramic films with the conductivities of 1.1-2.2j10 2 Scm, while the irradiated area became an insulator.

Multibenzocyclobutene Functionalized Silane for Low-k Polyarylsilane Thermosets with Low Coefficient of Thermal Expansion and High Thermostability

“…21−24 Polycarbosilanes are also usually used as organic high-yield precursors for SiC ceramic materials after treatment at high temperature above 1000 °C. 25,26 Similarly to polycarbosilanes, polyarylsilanes with methylene substituted by aryl group have also attracted attention. 27−30 These polymers usually exhibit excellent heatresistance and high ceramic yield after pyrolysis.…”

“…Polycarbosilanes possess unique properties such as excellent thermostability and relatively low k in virtue of the low polarity of the Si–C bonds. − Yang et al combined BCB with polycarbosilane low- k materials. − Polycarbosilanes are also usually used as organic high-yield precursors for SiC ceramic materials after treatment at high temperature above 1000 °C. , Similarly to polycarbosilanes, polyarylsilanes with methylene substituted by aryl group have also attracted attention. − These polymers usually exhibit excellent heat-resistance and high ceramic yield after pyrolysis. Besides, the arrangement of a silicon atom with a π electron system such as phenyl or biphenyl also serves as functional polymer materials, for instance, hole-transporting materials and photoluminescent materials .…”