Polyimides, nonlinear optics applications

Verbicky JW (1988) Polyimides. In Encyclopedia of polymer science and engineering, vol 12. Wiley, New York, pp 364r-383 Verbiest T, Borland DM, Jurich MG, Lee VY, Miller RD, Volksen W (1995) Exceptiomlly thermally stable polyimides for second-order nonlinear optical applications. Science 268 1604 1606... 

Use your audience analysis to help determine the types of information to include under each main point. For example, when talking about the synthesis of nonlinear optical polyimides for practical applications, mention the approaches that have been developed to tackle the instability problems. When talking about pollution in an area, refer to the dumping of chemicals in a nearby stream. 

It was shown that the thermal stability of conventionally formed polyimide polymers and copolymers (bearing nonlinear optical chromophores) is adequate for numerous device applications. There is a problems, however, with doped systems in that they tend to undergo phase separation. This limits the amount of the nonlinear optics chromophore that can be incorporated into the system. To try and make doping unnecessary, multifunctional polymers were synthesized that contain all the necessary components. One limitation of this technology, however, is the small nonlinear optical response (r33) values for many such poiyimides. This is not true of all of them. 

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