Nam, Ki-Ho; Jin, Jeong-un; Lee, Dong Hoon; Han, Haksoo; Goh, Munju; Yu, Jaesang; Ku, Bon-Cheol; You, Nam-Ho published the artcile< Towards solution-processable, thermally robust, transparent polyimide-chain-end tethered organosilicate nanohybrids>, Formula: C8H4O6, the main research area is polyimide nanohybrid optical elec thermal property.
The main challenge to developing future display substrates is to synthesize flexible substrate materials that also have excellent optical and thermal properties, and low thermal expansion number In this study, a novel trifluoromethylated asym. aromatic diamine, 4-[[4-(4-amino-2-trifluoromethylphenoxy)phenyl]sulfonyl-3-(trifluoromethyl)]benzenamine (AFPSFB), was synthesized through nucleophilic substitution. Conventional two-step polycondensation of AFPSFB with com. available tetracarboxylic dianhydrides enabled the fabrication of fully or semi-aromatic polyimides (PIs). The resulting PIs were highly soluble in polar aprotic solvents with good optical and thermal properties. Next, polyhedral oligomeric silsesquioxane containing an amine group (NH2-POSS) was reacted with the resulting soluble PI. All the PI-POSS nanohybrids displayed excellent optical properties, including high transparency (>91% at 400 nm), low refractive index (<1.5589), and very small birefringence (<0.0025 at 637 nm). End-capping of the POSS and chem. bonding between the POSS and PIs significantly enhanced the thermal and elec. properties. The results provide useful information for designing mol. architectures for manufacturing high-performance flexible substrates in future display devices. Composites, Part B: Engineering published new progress about Additive polymerization. 4415-87-6 belongs to class tetrahydrofurans, and the molecular formula is C8H4O6, Formula: C8H4O6.
Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem