一个单一的Enantiomer发射器启用了超结构螺旋倒置,用于以双向循环极化对照光的向上转换和向下转移
Chao Ren1, Wenjing Sun1, Tonghan Zhao1
1CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology (NCNST), No. 11, ZhongGuanCun BeiYiTiao, Beijing, 100190, P. R. China.
Angewandte Chemie (International ed. in English)
|October 30, 2023
概括
研究人员操纵液晶 (LC) 中的奇拉发射器来控制超分子奇拉性和循环极化发光 (CPL). 他们通过调整发射度来实现CPL的多阶段反转,展示了调整LC属性的新方法.
科学领域:
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
- 光电学是指光电子产品.
背景情况:
- 液晶 (LC) 中的螺旋扭曲倾向通常是由性发射器的内在配置决定的.
- 在LC中控制超分子度和循环极化发光 (CPL) 对先进的光学应用至关重要.
研究的目的:
- 在LCs中引入超分子性和CPL的多阶段逆转.
- 为了研究形发射器度对螺旋结构和CPL的影响.
- 探索使用奇拉发射器和随后的CPL操纵对光子带间隙 (PBG) 的直接调整.
主要方法:
- 系统地改变液晶单体 (5CB) 中单个反体发射物的度 (R-PCP).
- 分析螺旋结构反转和相应的CPL标志变化.
- 将一个无体敏感剂 (PtTPBP) 纳入体LC超结构中.
- 调整光子带间隙 (PBG) 以实现受控的CPL发射.
主要成果:
- 增加R-PCP含量从1重%增加到3重%,反转了LC螺旋和CPL标志.
- 奇拉发射器的双向性和硬体相互作用被确定为螺旋反转的关键因素.
- 在4重%的R-PCP中,PBG与排放范围相匹配,导致另一个具有高不对称系数 (≈1.2) 的CPL逆转.
- 从R-PCP实现了同时向上转换的CPL和从PtTPBP转向下移的CPL,在单个合LC系统中以相反的旋转实现.
结论:
- 通过控制性发射器度,展示了一种用于通过控制性发射器度来对LC中的超分子性和CPL进行多阶段逆转的新方法.
- 建立了直径发射器含量,螺旋结构,PBG和CPL属性之间的直接联系.
- 通过PBG调,成功地将上转换和下转换CPL集成到一个单一的性LC系统中,为先进的光子设备开辟了可能性.
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