申请人:KONINKLIJKE PHILIPS ELECTRONICS N.V.
公开号:US20030111640A1
公开(公告)日:2003-06-19
New photopolymerizable liquid crystalline dioxetane compounds are provided. having the general formula I:
1
wherein R
1
and R
2
are independently selected from straight or branched C
1
-C
4
alkyl and hydrogen; X and X′ are independently selected from oxygen, sulfur, a single covalent bond, —O—CO—, —CO—O—, and —O—CO—O—; Y and Y′ are spacer groups having each independently 1 to 30 carbon atoms (linear or branched), in which the carbon chain may be interrupted by oxygen in the ether function or by sulfur in the thioether function; Z and Z′ are independently selected from oxygen, sulfur, a single covalent bond, —O—CO—, —CO—O—, and —O—CO—O—; and M is any suitable mesogenic group.
Also, compositions are provided containing one or more compounds of formula I, as well as methods of preparing said compounds and compositions. These compounds and compositions show excellent characteristics upon polymerization, such as improved non-shrinking properties, and are useful in a variety of applications, in particular in liquid crystal devices, sensors, and optical precision instruments. ½
本发明提供了新的光聚合液晶二氧杂环烷化合物,其具有通式I:1,其中R1和R2分别选择直链或支链的C1-C4烷基和氢;X和X'分别选择氧、硫、单一共价键、—O—CO—、—CO—O—和—O—CO—O—;Y和Y'是间隔基,每个都独立地具有1至30个碳原子(线性或支链),其中碳链可以通过醚功能中的氧或硫醚功能中的硫来中断;Z和Z'分别选择氧、硫、单一共价键、—O—CO—、—CO—O—和—O—CO—O—;M是任何适当的介向基团。此外,还提供了含有一个或多个I式化合物的组合物,以及制备所述化合物和组合物的方法。这些化合物和组合物在聚合时显示出优异的特性,例如改善的不收缩性能,并且在各种应用中有用,特别是在液晶装置、传感器和光学精密仪器中。