Described herein are compounds generally comprising an indeno[2',3':3,4]naptho[1,2-b] pyran structure. Such compounds may be useful for their photochromic properties, and be used in certain photochromic compositions. Such compositions may further comprise other photochromic compositions and/or materials. Additionally, such compounds and/or compositions may be suitable for preparing certain photochromic articles. Also described herein are methods for preparing certain photochromic compounds, compositions, and articles.
本文描述的化合物通常包括一个
吲哚并[2',3':3,4]
萘并[1,2-b]
吡喃结构。这些化合物可能因其光致变色性能而有用,并可用于某些光致变色组合物中。这些组合物可能进一步包括其他光致变色组分和/或材料。此外,这些化合物和/或组合物可能适用于制备某些光致变色物品。本文还描述了制备某些光致变色化合物、组合物和物品的方法。