对于固态二二氧化avobenzone的多态和可逆的机色色发光
Guoqing Zhang1, Jiwei Lu, Michal Sabat
1Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, USA.
Journal of the American Chemical Society
|January 30, 2010
概括
二甲 (BF(2) AVB) 显示了可重写的发光. 机械应力会导致颜色变化,后者会慢慢恢复,从而产生一种新的"划伤表面"墨水.
科学领域:
- 材料科学 材料科学 材料科学
- 光物理学的光学物理学
- 超分子化学 超分子化学
背景情况:
- 商业防晒含有紫外线吸收剂,如阿沃松.
- 复合物可以表现出独特的光物理性质.
- 机械色材料在响应机械刺激时会改变颜色.
研究的目的:
- 为了研究二二青 (BF(2) AVB) 的固态发光特性.
- 为了探索BF的机械色态行为(2) AVB电影.
- 评估BF(2) AVB作为可重写墨水的潜力.
主要方法:
- 二博 (BF(2) AVB) 的合成.
- 制造BF的薄膜(2)AVB.
- 机械刺激 (划伤,涂抹,触摸) 的薄膜.
- 紫外线-Vis吸收和光谱学.
- 温度依赖的光恢复研究.
主要成果:
- BF(2) AVB在固态状态下表现出形态依赖的排放.
- 机械应力会在UV激发下诱导BF(2) AVB膜的发射颜色发生显著的红移.
- 机色效应是可逆的,光恢复在室温下缓慢发生或在加热后迅速发生.
- 作为可重写的"划伤表面"墨水,已证明其潜力.
结论:
- BF(2) AVB 具有独特的机色色发光特性.
- 在机械应力和随后的恢复下可逆的颜色变化为新型应用提供了潜力.
- BF(2) AVB可以用作具有潜在商业价值的可重写墨水.
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