在0D有机-无机混合材料中,通过精确的有机阴离子修饰,调阶段过渡和光火
Leqi Chen1, Zining Zhou1, Yawen Yang1
1Jiangsu Key Laboratory for Science and Applications of Molecular Ferroelectrics, Southeast University, Nanjing 211189, P. R. China. yeqiong@seu.edu.cn.
Dalton transactions (Cambridge, England : 2003)
|March 10, 2025
概括
新的有机-无机混合材料显示可调节的光发光,用于防伪. 研究人员合成了三种具有不同有机组的化合物,观察了相变温度和发光的显著变化,从而实现了明显的光灭行为.
科学领域:
- 材料科学 材料科学 材料科学
- 化学 化学 化学
- 固态物理 固态物理
背景情况:
- 有机-无机混合材料具有刺激响应的光发光是防伪和信息加密的关键.
- 通过分子设计控制光火是一个重大挑战.
研究的目的:
- 合成和描述可调节光发光的新型有机-无机混合化合物.
- 研究有机组替代对相位过渡温度和发光特性的影响.
- 探索这些材料在防伪应用中的潜力.
主要方法:
- 三种新型有机-无机杂交化合物的合成: (ETMP) 2MnBr4, (PTMP) 2MnBr4和 (ATMP) 2MnBr4.
- 系统地替换有机组 (乙基,基,基) 来调整材料的性质.
- 阶段过渡温度和光发光 (PL) 特性的表征,包括量子产量和温度依赖的光火.
主要成果:
- 阶段过渡温度增加了47K,以乙烯替换为基 (312.3K至359.3K).
- 光发光量子产量通过改变阴离子显著提高,从35.90%提高到75.26%.
- (ETMP) 2MnBr4和 (PTMP) 2MnBr4显示PL强度下降和稳定后相过渡,而 (ATMP) 2MnBr4显示完全光火.
结论:
- 这项研究展示了在基于的混合材料中调整相位过渡温度和发光性能的有效策略.
- 观察到明显的光灭行为,突出显示了多层次反假冒应用的潜力.
- 这些发现有助于开发低毒性,高效的多功能材料,用于先进的安全功能.
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