359642-31-2

Upstream product

• 3236-71-3 9,9-bis(4-hydroxyphenyl)fluorene 
• 129464-01-3 2-(benzyloxy)-4-fluoro-1-nitrobenzene 
• 359820-18-1 9,9-bis(4-(3-(benzyloxy)-4-nitrophenoxy)phenyl)fluorene 
• 1026380-15-3 9,9-bis[4-(4-nitro-3-hydroxylphenoxy)phenyl]fluorene 

Relevant academic research and scientific papers

Flexible, optically transparent, high refractive, and thermally stable polyimide-TiO2 hybrids for anti-reflection coating

In this study, flexible and transparent polyimide-nanocrystalline-titania hybrid optical films with a high titania content (up to 50 wt%) and thickness (15 μm) were prepared from new soluble poly(o-hydroxy-imide)s and fabricated for a three-layer antireflection coating. The hydroxyl groups on the backbone of the polyimides could provide a reaction site for organic-inorganic bonding and resulted in homogeneous hybrid solutions by controlling the mole ratio of titanium butoxide/hydroxyl groups. The well-dispersed nanocrystalline-titania was demonstrated by XRD and TEM measurements. The flexible hybrid films with good surface planarity, thermal dimensional stability, tunable refractive index (1.63-1.80 at 633 nm), and high optical transparency were successfully obtained and further utilized to prepare a three-layer anti-reflection coating, indicating its potential optical applications.

Bis-o-aminophenols and o-aminophenolcarboxylic acids and process for preparing the same

Bis-o-aminophenols and o-aminophenolcarboxylic acids have the following structures: A1 to A7 are, independently of each other, H, F, CH3, CF3, OCH3 or OCF3. T is an aromatic or heterocyclic