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Appendix E: Functional and Organic Hybrid Materials
Pages 285-292

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From page 285...
... Examples of two current approaches are shown in the next two figures. Figure E-4 shows several functional polymers reported to exhibit PR effects including functional polyurethanes, functional conjugated polymers, functional polyimides, and conjugated polymers containing transition metal complexes.
From page 286...
... 2N~=~ | 3500 L NC ON l FIGURE E-2 Typical electro-optic chromophore structures and their first molecular hyperpolarizability values.
From page 287...
... H3C ; O CN CN ~ N OI '1~] ' NO2 NO2 ATOP-1 DHADC-MPN PDCST DEANST FDEANST DMNPAA FIGURE E-3 EHDNPB NPADVBB Polymers and molecules used in preparing photorefractive composite films.
From page 288...
... FIGURE E-6 Nit N B F.\ F: OF Fed W~ F: F ,~ ~ F = ~ Photochromic switch. SOURCE: Reprinted by permission from Fraysse et al.
From page 289...
... In the example shown in Figure E-7, the macromolecular ring consists of two positively charged bipyridinium groups separated by p-xylyl groups. The linear chain consists of flexible polyether groups segmented between benzidene and biphenol electron donating groups.
From page 290...
... to C60. First, the conjugated polymer absorbs a photon of light and becomes electronically excited; second, this excited molecule transfers an electron to a nearby C60 molecule within 3 x 10-13 seconds.
From page 291...
... 2000. Synthesis and properties of dinuclear complexes with a photochromic bridge: An intervalence electron transfer switching "on and off." Eur.


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