申请人:Kelly Malcolm Stephen
公开号:US20050253112A1
公开(公告)日:2005-11-17
A composition capable of emitting circularly polarised light comprises a medium including a chiral, helical liquid crystalline phase with a substantially fixed, temperature independent helical pitch. The liquid crystalline phase is comprised of calamatic liquid crystal molecules having a luminescent moiety and the composition is such that excitation of the luminescent moiety causes the medium to emit light in the bandwidth of selective reflection of the liquid crystalline phase. To achieve the substantially temperature independent helical pitch, the chiral helical liquid crystalline phase may be in the form of a glass or a polymerised network. The composition may be used to produce a light emitting device, e.g. and OLED.
一种能够发射圆偏光的组合物,包括一种介质,其中包含一种手性、螺旋液晶相,其具有实质上固定的、温度独立的螺旋步距。该液晶相由具有发光基团的灾变型液晶分子组成,组合物的构成使得激发发光基团会导致介质在液晶相选择性反射的频带内发射光。为了实现实质上温度独立的螺旋步距,手性螺旋液晶相可以以玻璃或聚合网络形式存在。该组合物可以用于制造发光装置,例如OLED。