聚合诱导的发射和光采集功能
Yawen Li1, Yunhong Dong1, Lin Cheng1
1Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, National Demonstration Center for Experimental Chemistry Education, College of Chemistry and Materials Science , Northwest University , Xi'an 710069 , People's Republic of China.
Journal of the American Chemical Society
|April 27, 2019
概括
基于四乙烯的二旋自组装成具有聚合诱导排放 (AIE) 的光纳米球. 这些AIE活性纳米球有效封装着染料, 创建具有增强能量转移的光采集系统.
科学领域:
- 超分子化学
- 材料科学
- 有机化学
背景情况:
- 聚合诱导的发射 (AIE) 是一种现象,在聚合时分子表现出强烈的光.
- 四乙烯 (TPE) 衍生物以其AIE特性而闻名.
- 开发具有可控自组合的功能性超分子材料对于先进的应用至关重要.
研究的目的:
- 合成一种新的以四乙烯为基础的四基二旋.
- 为了研究它在3D超分子框架中的自我组装.
- 探索其作为AIE活跃的光采集应用平台的潜力.
主要方法:
- 一个合成的四二旋.
- 进行X射线晶体结构分析和高分辨率传输电子显微镜 (HRTEM) 进行结构确认.
- 封装有机染料 (例如尼罗河红色) 形成光采集纳米球.
主要成果:
- 成功合成以四乙烯为基础的四基二环 (1).
- 在水溶液中通过AIE自组成高光量子产量 (2) (ΦF=97.7%).
- 通过封装尼罗河红色,形成光采集纳米球 (3),显示大红移 (Δλ = ∼70 nm),高效能传输 (ΦET = 77.5%) 和高天线效应 (14.3).
结论:
- 合成的四离子二环作为一个强大的AIE活性超分子平台.
- 自组装的纳米球通过高效的能量传输表现出极好的光采集能力.
- 这项工作为设计用于传感和能源应用的功能性超分子材料提供了一个有前途的策略.
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