将热激活的延迟光转化为室温光,通过调节捐赠体的电荷转移共晶体
Yating Wen1,2, Shuaiqiang Zhao1, Zhongzhao Yang1
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China.
The journal of physical chemistry letters
|March 1, 2024
概括
桑衍生物和TCNB的共晶体表现出可调节的发光. 素替代剂通过改变晶体包装和分子聚合,将辐射从延迟光转变为光.
科学领域:
- 材料科学 材料科学 材料科学
- 固态化学 固态化学
- 光物理学的光学物理学
背景情况:
- 提桑 (TX) 衍生物因其发光性质而受到探索.
- 与1,2,4,5-四亚 (TCNB) 共同结晶提供了一种调整排放特征的策略.
- 在TX捐赠体上的素替代剂可以影响分子间相互作用和固态行为.
研究的目的:
- 研究素替代剂对硫桑-TCNB共晶结构的影响.
- 为了将晶体包装与发光特性相关联,特别是从延迟光到光的过渡.
- 为了建立一个结构-属性关系的化硫合晶.
主要方法:
- 与不同素替代剂 (R = H, F, Cl, Br, I) 和 TCNB.一起结晶的桑衍生物.
- 进行X射线衍射分析以确定晶体包装结构.
- 光发光光谱学用于表征发射特性 (延迟光和光).
主要成果:
- 晶TT-R (R=H,F,Cl,Br,I) 已经成功合成.
- 观察到从热激活的延迟光 (TT-H,TT-F,TT-Cl) 到室温光 (TT-Br,TT-I) 的转变.
- 晶体包装从1:1和2:1的供体-受体堆叠演变为分离的供体和受体层,随着素原子数的增加.
- 分子聚合从单体过渡到二元体和多元体.
结论:
- 素替代剂显著影响了桑-TCNB共晶体的晶体包装和发光.
- 存在一个明确的结构-属性关系,将素原子数与晶体结构,分子聚合和排放类型联系起来.
- 这项研究提供了关于设计具有可调节光物理性质的固态发射器的见解.
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