一种新型萘吡喃光致变色化合物及其制备方法和应用
By introducing naphthylpyran photochromic compounds with pentafluorosulfur groups and polyether chain structures, the problems of PFAS limitation, contradiction between color change rate and fatigue life, and easy degradation during thermal processing of existing naphthylpyran photochromic dyes have been solved, achieving faster response, stronger weather resistance and higher solubility, making them suitable for industrial applications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SOUTH CHINA NORMAL UNIV
- Filing Date
- 2025-12-05
- Publication Date
- 2026-07-17
AI Technical Summary
Existing naphthylpyran photochromic dyes suffer from problems such as PFAS environmental regulations, contradiction between color change speed and fatigue life, easy degradation due to thermal processing, and slow response speed. In particular, -CF3 substituted compounds have a slow response at low temperatures, a significant decrease in color depth at high temperatures, and limited fatigue stability.
The introduction of pentafluorosulfide (-SF5) strong electron-withdrawing groups improves the molecular electron cloud density, enhances solubility and resin compatibility through the polyether chain structure, and regulates photochromic properties through a multi-aromatic donor structure. The synthetic route is simple and suitable for industrial scale-up.
It significantly improves photoactivation speed, fading speed and weather resistance, meets global non-PFAS environmental regulations, improves fatigue resistance, has an efficient synthesis route, and is suitable for industrial scale-up.
Smart Images
Figure CN121318906B_ABST