Perfluorocyclobutane-Based Polyester(arylene ether)s for Applications in Integrated Optics
摘要:
Novel ester-containing aryl trifluorovinyl ether monomers and the resulting perfluorocyclobutane aromatic ether polymers have been synthesized and characterized to exhibit desirable properties for low optical loss waveguide applications. The monomers were prepared via a very mild esterification between the intermediate 4-trifluorovinyloxybenzoic acid and diphenol/triphenol using N,N'-dicyclohexylcarbodiimide as the activating agent for carboxylic acid and 4-(dimethylamino)pyridinium 4-toluene-sulfonate as the catalyst. Chloro and bromo atoms are incorporated into trifunctional trifluorovinyl aryl ether monomers to achieve good tunability in refractive index without introducing additional optical loss. Polymerization of the monomers proceeded in Melt or solution to form perfluorocyclobutane-containing prepolymers with good processability. The combination of desirable optical polymer properties, such as thermal stability (T-g: 38-350 degreesC), solvent resistance, tunable refractive index (n: 1.447-1.546 at 1310 nm), and low optical loss (as low as 0.26 dB/cm at 1310 nm) can be achieved through the copolymerization of highly fluorinated and flexible difunctional monomers with chloro/bromo-containing rigid trifunctional monomers.
CROSSLINKABLE HOLE-TRANSPORTING MATERIALS FOR ORGANIC LIGHT-EMITTING DEVICES
申请人:Jen Kwan-Yue
公开号:US20090278445A1
公开(公告)日:2009-11-12
Crosslinkable compounds useful for making hole-transporting materials for organic light-emitting devices, hole-transporting layers made from the crosslinkable compounds, and light-emitting devices that include the hole-transporting layers.
ARTICLES AND COMPOSITIONS COMPRISING HOST POLYMERS AND CHROMOPHORES AND METHODS OF PRODUCING THE SAME
申请人:General Dynamics Mission Systems, Inc.
公开号:EP3613810A1
公开(公告)日:2020-02-26
Compositions and articles including host polymers and chromophores and methods of producing the same are provided. In an exemplary embodiment, an article includes a host polymer with a host polymer refractive index. The article also includes a chromophore with a chromophore refractive index that is greater than the host polymer refractive index. The chromophore refractive index changes with changes in an electric field, and the chromophore is dissolved within the host polymer. The article has an article refractive index that is between the host polymer refractive index and the chromophore refractive index.