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    • 7. 发明授权
    • Cyclobutenedione derivative, process for preparing the same, and
nonlinear optical element
    • 环丁二酮衍生物,其制备方法和非线性光学元件
    • US5616802A
    • 1997-04-01
    • US421875
    • 1995-04-14
    • Yasunari NishikataLyong Sun Pu
    • Yasunari NishikataLyong Sun Pu
    • G02F1/35C07B53/00C07C221/00C07C225/20G02F1/355G02F1/361C07C211/16
    • G02F1/3611C07C225/20C07C2101/04
    • The present invention provides a novel chemical substance for practical organic nonlinear optical element having a great nonlinear optical effect, an excellent chemical and thermal stability and transparency which can easily undergo crystalline growth from a liquid phase or melt phase and can be easily worked, a process for the preparation thereof, and a nonlinear optical element prepared from such a material. A novel cyclobutenedione derivative prepared in accordance with the following reaction formula, a process for the preparation thereof, and a nonlinear optical element comprising such a derivative are provided: ##STR1## wherein X.sup.1 represents a halogen atom; X.sup.2, X.sup.3, X.sup.4 and X.sup.5 each represent a hydrogen atom or a halogen atom; and R represents a substituent represented by the following formula: ##STR2## wherein C* represents an asymmetric carbon atom.
    • 本发明提供了一种具有非常大的非线性光学效应,优异的化学和热稳定性以及透明度的实用有机非线性光学元件的新颖化学物质,其可以容易地从液相或熔融相中经历结晶生长并且可以容易地加工, 以及由这种材料制备的非线性光学元件。 提供了根据以下反应式制备的新型环丁烯二酮衍生物,其制备方法和包含这种衍生物的非线性光学元件:其中X 1表示卤素原子; X2,X3,X4和X5各自表示氢原子或卤素原子; 并且R表示由下式表示的取代基:其中C *表示不对称碳原子。