Microelectronic applications, enhanced

Enhanced Processing of Pofy(tetrafluoroethylene) for Microelectronics Applications... 

As mentioned earlier, siloxanes impart a number of beneficial properties to polymeric systems into which they are incorporated, including enhanced solubility, resistance to degradation in aggressive oxygen environments, impact resistance and modified surface properties. These particular advantages render polysiloxane-modified polyimides attractive for aerospace, microelectronic and other high performance applications (40-43). 

Polyimides are of particular interest for many engineering applications due to their excellent thermal and mechanical properties in the aerospace and microelectronics industries. Many important applications have been developed (1,2 The poiyimide siloxane segmented copolymers have been of particular interest since incorporation of amine functionalized polysiioxanes into polyimides have resulted in improved solubility and processability, decreased water absorption, atomic oxygen resistance (3), lower dielectric constants (4) and enhanced adhesion (5). The copolymers are generally synthesized as shown in Scheme 1 from a combination of a dianhydride and... 

Such polymers can be modified into high dielectric, photoactive, and electroactive materials by tailoring them with tetra amino metalphthalocyanines. As metals, copper, nickel, and cobalt have been used. The cyanine is attached at the pending carboxyl group [13]. This modification enhances the thermal stability of the materials. These polymers are potential candidates in applications, such as sensors, actuators, artificial muscles, bypass capacitors in microelectronics, and energy-storage devices. 

Aromatic dimethacrylates are used in many applications in dentistry, optical eye wear, fiber optics, and microelectronics. In addition, carbazole based polymers have demonstrated good photorefractive, optical, and chargetransporting properties, combined with ease of processing. By incorporating carbazole into novel aromatic methacrylates and dimethacrylates, materials with enhanced optical properties, such as refractive index are obtained. Such photocrosslinkable oligomers can be illustrated as follows ... 

---