Aggregation-induced emission based on a fluorinated macrocycle: visualizing spontaneous and ultrafast solid-state molecular motions at room temperature via F⋯F interactions,Journal of Materials Chemistry C

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Aggregation-induced emission based on a fluorinated macrocycle: visualizing spontaneous and ultrafast solid-state molecular motions at room temperature via F⋯F interactions
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2020-10-01 , DOI: 10.1039/d0tc03797d
Mei Zhang _{1,

2,

3,

4} , Jingjing Guo _{4,

5,

6,

7,

8} , Tingting Liu _{1,

2,

3,

4} , Zhanyu He _{1,

2,

3,

4} , Majeed Irfan _{1,

2,

3,

4} , Zujin Zhao _{4,

5,

6,

7,

8} , Zhuo Zeng _{1,

2,

3,

4}

Affiliation

We for the first time report the efficient construction of novel tetraphenethylene (TPE)-based macrocycles with various mechanofluorochromism (MFC) behaviors involving solid-state molecular motions. We were able to facilely regulate the diverse solid-state molecular motion behaviors of 18–33-membered macrocycles by adjusting the sizes and shapes of the macrocycle rings. Notably, the building of an intermolecular 6-membered ring between two 20-membered fluorinated macrocycles via F⋯F interactions afforded macrocycle 6F-2, which exhibited changes in MFC behaviors that could be rapidly reversed, i.e., within 100 seconds, at room temperature. X-ray structural analysis supported the unique role of fluorinated macrocycles in self-reversible MFC and the emission variation, particularly, in visualization of solid-state molecular motion.

中文翻译：

基于氟化大环的聚集诱导的发射：通过F⋯F相互作用可视化室温下的自发和超快固态分子运动

我们首次报道了具有各种涉及固态分子运动的各种机械荧光致变色（MFC）行为的新型基于四苯乙烯（TPE）的大环的有效构建。通过调节大环环的大小和形状，我们能够轻松地调节18-33元大环的各种固态分子运动行为。值得注意的是，通过F⋯F相互作用在两个20元氟化大环之间建立了一个分子间6元环，从而提供了大环6F-2，该环表现出MFC行为的变化，可以迅速逆转，即，在室温下100秒内。X射线结构分析支持氟化大环化合物在自可逆MFC中的独特作用以及发射变化，特别是在固态分子运动的可视化中。

更新日期：2020-10-14

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