基于碳界面共价键的可见光响应长光复合材料的制备和应用
Jinzhi Lv1, Xianxin Wu1, Jin Wei1
1Shanxi Normal University, Taiyuan 030031, PR China.
概括
研究人员开发了一种可见光激发光色材料的新型碳点/酸复合物. 这种材料具有长时间的光照,可方便且安全地用于防伪.
科学领域:
- 材料科学
- 摄影化学
- 纳米技术
背景情况:
- 与光色材料的紫外线相比,可见光提供了更安全和更容易获得的激发源.
- 在可见光下长时间发光的碳点材料仍然是一个重大挑战.
研究的目的:
- 合成一种新型的碳点/酸复合物 (CDs/BA),能够在可见光激发长时间的后照.
- 研究合成材料的光物理特性和潜在应用.
主要方法:
- 使用-碳键合成碳点/酸复合物.
- 材料的光发特性,包括长光后发射,热激活延迟光 (TADF) 和室温光 (RTP).
- 评价光发光量子产量 (PLQY) 和后照持续时间.
主要成果:
- 在可见光激发下,合成的CDS/BA复合物呈现出TADF和RTP的混合长光后发射光谱.
- 实现高绝对光发量量 (PLQY) 的高达30.35%.
- 经过激发后持续超过30秒的长时间后发光,具有激发和时间依赖的特征.
结论:
- 开发的CDs/BA复合材料成功地克服了可见光激发的碳点材料长时间后照的挑战.
- 该材料的性能适用于需要方便的光源 (如手机,手电筒) 和增强安全性的先进防伪技术.
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