| 摘要 |
<p>The invention is concerned with nlo polymers of general formula (I) for the production of polymer layers having optical non-linear properties in selectively defined and optionally shaped areas, which areas are separate from those areas having a centro-symmetrical structure or areas having other optical non-linear properties. In formula (I) Ma, Mb, Mc signify monomer units for homo- or copolymers; x, y, z indicate mole fractions of the copolymers, whereby in each case 0 < x <= 1; 0 <= y < 1 and 0 <= z < 1; Sa, Sb, Sc represent spacer units; F denotes an nlo-active chromophore having an adsorption in the region of 300 nm to 700 nm; Za, Zb represent molecule units which are photochemically dimerizable; n is a magnitude of 4-1000000; and s is 1, 2 or 3. The polymers in accordance with the invention are characterized in that the nlo-active (nlo = non-linear optic) chromophores (F) are bonded via a spacer (Sa) to the monomer unit (Ma) and themselves carry, likewise via a spacer, one or more photochemically dimerizable groups (Za) which serve for the photochemical cross-linkage of the polymer.</p> |
