| abstract |
In electro-optical and photonic devices with a functional layer of oriented, cross-linked non-linear optical (NLO) polymer between 2 buffer layers, the polymer is a polyadduct (I) containing a NLO grouping, derived from (a) an NLO active copolymer (II) containing glycidylamino groups reacting with cyanate groups and (b) organic di- or polycyanate(s) (III). Also claimed is a method of making the devices. |