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调节含有异环的AIE原体的接近效应

Jianyu Zhang¹, Yujie Tu¹, Hanchen Shen¹

¹Department of Chemistry, Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction, and Guangdong-Hong Kong-Macau Joint Laboratory of Optoelectronic and Magnetic Functional Materials, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, 999077, China.

Nature communications

|June 24, 2023

概括

这项研究探讨了甲基基诺素衍生物的近距离效应,揭示了它在发光和聚合诱导的辐射中的双重作用. 这些发现为设计响应性异环体发光剂提供了新的策略.

科学领域:

有机化学有机化学
光物理学的光学物理学
材料科学材料科学材料科学

背景情况:

靠近效应的特点是电子状态 (n,π*) 和 (π,π*) 距离很近,通常会阻碍异环化合物中的发光.
缺乏对操纵这种效应以改善发光特性进行系统的调查.

研究的目的:

系统地研究近距离效应对甲基素衍生物光物理性质和聚合诱导排放 (AIE) 的影响.
探索这些衍生品作为传感和信息加密的响应材料的潜力.

主要方法:

一系列甲基基诺素衍生物的合成,具有不同的电子捐赠组.
光物理特征包括光光谱和量子产量测量.
理论计算 (例如,DFT) 来分析电子状态和合效应.

主要成果:

电子捐赠组调节了 (n,π*) 和 (π,π*) 状态的能量水平,改变了近距离效应.
在接近效应,电子合和AIE行为之间建立了明确的相关性.
合成的化合物表现出对酸刺激的动态反应,适合传感器应用.

结论:

靠近效应可以对异环系统中的AIE产生有害和有益的影响.
定制电子结构为控制近距离效应和AIE提供了一条途径.
这些发现为开发新的功能性和响应性AIE发光剂铺平了道路.

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