The present invention provides an electro-optical device comprising NLO polymer in the active layer with improved stability for light in the wavelength range of 600-1600 nm is guided through the device.
The present invention is directed to an electro-optical device comprising two cladding layers and an active layer sandwiched between these cladding layers, with the active layer comprising a non-linear optically active side chain polymer with NLO-chromophores having an N-donor-delocated π system-acceptor structure, the N-donor not being bonded directly to alkyl groups.
There are two ways to create NLO-chromophores with N-donors which do not have adjacent linear alkyl groups:
The first way is to bond one or two aromatic groups. The N-atom is further bonded to the delocated π system. If only one aromatic group is present, the N-atom is, besides the delocated system, further bonded to a hydrogen or deuterium atom.
The second way of avoiding adjacent alkyl groups is to employ an N-donor moiety wherein no adjacent linear alkyl groups are present.
本发明提供了一种电光器件,该器件的有源层中包含 NLO 聚合物,在波长范围为 600-1600 纳米的光被引导通过该器件时,其稳定性有所提高。
本发明涉及一种电光器件,包括两个包层和夹在包层之间的有源层,有源层包括非线性光学活性侧链聚合物,其 NLO 色基具有 N-载体-脱位 π 系统-受体结构,N-载体不直接与烷基键合。
有两种方法可以制造出不具有相邻线性烷基的 N-质子的 NLO 色基:
第一种方法是键合一个或两个芳香基团。N 原子进一步键合到脱位的 π 系统上。如果只有一个芳香基团,则 N 原子除了与脱位体系结合外,还与氢原子或
氘原子结合。
避免相邻烷基的第二种方法是采用不含相邻线性烷基的 N-供体分子。