可见光驱动的固态光光开关用于高层次信息加密
Zhiyuan Han1, Meixia He1, Gang Wang2
1Institute of Advanced Materials and School of Chemistry and Chemical Engineering, Southeast University, Nanjing, 211189, China.
Angewandte Chemie (International ed. in English)
|September 25, 2024
概括
研究人员使用希夫基和纳夫他化物光体开发了新的固态光光开关. 这些材料表现出可逆的,可见光驱动的颜色和光变化,使先进的信息加密成为可能.
科学领域:
- 材料科学 材料科学 材料科学
- 有机化学 有机化学
- 摄影化学的使用.
背景情况:
- 开发可见光激活的固态光光开关是一个重大挑战.
- 现有的光开关通常依赖于salicylaldimine结构和激发状态的分子内质子转移 (ESIPT) 与cis-trans异构化.
研究的目的:
- 设计和合成新型的希夫基基光开关,其中包括纳夫他化物光体.
- 为了实现可见光驱动的,在固态中实现双模式 (颜色和光) 切换.
- 探索这些光开关在信息加密应用中的潜力.
主要方法:
- 将一个庞大的纳夫他胺光体纳入希夫基结构.
- 在可见光照射下研究光交换行为.
- 涉及ESIPT和cis-trans异构化的机制研究.
- 展示应用程序,如光图和信息编码.
主要成果:
- 合成了三个新的光开关,在固态中显示双模式变化 (颜色和光).
- 最优的光开关在可见光照射时显示了三重光变化 (绿色,黄色,色).
- 切换过程是可逆的,可以在10个周期内重复,具有良好的光疲劳抵抗力.
- 纳夫塔利米德组促进了多色发射,并诱导了折叠结构,增强了ESIPT和异构.
结论:
- 建立了可见光驱动的固态光光开关的可靠策略.
- 开发的光开关显示了先进信息加密和短暂信息记录的前景.
- 这些发现有助于智能材料领域,具有可调节的光学特性.
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