A chromene compound having at least one indenonaphthopyran moiety which has a group forming a spiro ring together with the 13-position carbon atom and further an oligomer chain group selected from a polyalkylene oxide oligomer chain group having at least three recurring units and a polyester oligomer chain group having at least three recurring units, represented by the following formula and having reduced matrix dependence:
wherein R1 and R2 are each a group which may have an oligomer chain group, the ring Z bonded to the 13-position carbon atom of the chromene compound is a spiro ring group, and R3 and R4 are each an aryl group or heteroaryl group which may have an oligomer chain group.
Preferably, the chromene compound has at least one oligomer chain group in the molecule.
一种色烯化合物,其至少具有一个
茚并
萘吡喃分子,该分子具有一个与 13 位碳原子一起形成螺环的基团,还具有一个低聚物链基,该低聚物链基选自具有至少三个重复单元的聚环氧烷低聚物链基和具有至少三个重复单元的聚酯低聚物链基,由下式表示,并具有较低的基体依赖性:
其中 R1 和 R2 各为可具有低聚物链基的基团,与色烯化合物 13 位碳原子键合的环 Z 为螺环基,R3 和 R4 各为可具有低聚物链基的芳基或杂芳基。
铬烯化合物分子中最好至少有一个低聚物链基。