通过异构体工程实现共价有机聚合物的发光单晶,具有可调色发射的颜色
Yanyan Qin1,2,3, Pengfei She1,2,3, Xiaoda Wang1,3
1College of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology), Nanjing University of Posts and Telecommunications Nanjing 210023 P. R. China pengfei.she@njupt.edu.cn iamyma@njupt.edu.cn iamqzhao@nuist.edu.cn.
Chemical science
|March 12, 2026
概括
研究人员使用异构体控制设计了发光共价有机聚合物 (COP). 这一策略成功地通过抑制聚合,制造出发光的CityU-50晶体,与发光静音的CityU-60不同.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 晶体学 晶体学是指结晶学.
背景情况:
- 制备含有共价有机聚合物 (COP) 的- (B-N) 的发光单晶具有挑战性,大多数方法产生非发光材料.
- 控制晶体结构是实现聚合物所需光学性能的关键.
研究的目的:
- 开发一种创造发光B-N含有COP的策略.
- 为了研究结构-属性关系,控制COP的发光.
- 为了证明发光COP在信息加密中的应用.
主要方法:
- 使用两个不同的染色体异构体的异构体工程策略:3,3',6,6'-tetra(pyridin-4-yl) -9,9'-bicarbazole (3,6-TPy-BCz) 和2,2',7,7'-tetra(pyridin-4-yl) -9,9'-bicarbazole (2,7-TPy-BCz).
- 单晶X射线衍射分析以确定晶体结构.
- 光发光谱学用于描述发光特性.
- 溶解剂染色学研究,以评估溶剂反应性行为.
主要成果:
- 成功合成了B-N相关的COP的发光 (CityU-50) 和无发光 (CityU-60) 单晶.
- 3,6-TPy-BCz同位素导致CityU-50中的"松散"螺旋型聚合物链堆叠,抑制链间聚合,并使可见光可刺激发光.
- 2,7-TPy-BCz同位素导致CityU-60的"紧密"包装,导致一个非排放结构.
- 由于不同的聚合状态和溶剂诱导的包装变化,CityU-50表现出依赖激发和溶剂反应的发光.
- 展示了CityU-50在先进信息加密中的应用.
结论:
- 异构体工程是一种强大的策略,用于定制COP的晶体结构和发光.
- 控制聚合物链包装对于在固态材料中实现发光至关重要.
- 城市U-50代表了一种新的智能晶体材料类别,具有用于信息加密等先进应用的潜力.
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