由国家自然科学基金和陕西省科委资助的科研项目光致变色剂 SP-18,近日通过了由陕西省科委、教委等单位联合进行的省级技术鉴定。光致变色剂 SP-18是一种螺环化合物。它受到外界的刺激后内部结构即迅速发生变化,而当这种刺激解除后,又会很快恢复到原来的颜色。关于这一研究早在50年代国外 Photochromic agent SP-18, a research project funded by the National Natural Science Foundation of China and Shaanxi Provincial Science and Technology Commission, recently passed the provincial technical appraisal jointly conducted by the Shaanxi Provincial Science and Technology Commission and the Education Commission. Photochromic agent SP-18 is a spiro compound. It is subject to external stimuli after the internal structure that is rapidly changing, and when this stimulus is released, it will soon return to the original color. About this research as early as the 50’s abroad