Aggregation-induced emission from the crowded coronal chains of block copolymer micelles,Polymer Chemistry

当前位置： X-MOL 学术 › Polym. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Aggregation-induced emission from the crowded coronal chains of block copolymer micelles
Polymer Chemistry ( IF 4.1 ) Pub Date : 2020-06-23 , DOI: 10.1039/d0py00432d
Siyu Wang _{1,

2,

3} , Bixin Jin _{1,

2,

3} , Gangfeng Chen _{1,

2,

3} , Yunjun Luo _{1,

2,

3,

4,

5} , Xiaoyu Li _{1,

2,

3,

4,

5}

Affiliation

Aggregation-induced emission (AIE) has been an emergent research topic recently, and has been utilized to monitor the self-assembly process of block copolymers. But most of the efforts were focused on the AIE process in the micellar cores. In the current study, we incorporated tetraphenyl ethylene (TPE) into the corona-forming block of block copolymers. Despite their low content and that the TPE groups remained soluble with the coronal chains stretching into solution, significant fluorescence emission was observed upon micellization, due to the restriction of movement from the highly crowded and stretched coronal chains. In sharp contrast, in our control experiment, in which weak spatial confinement on the TPE groups was applied, negligible photoluminescence was observed. This process was also utilized to monitor the micellization process and determine solvent conditions for micellization. Finally, we showed that this method was extendable to various other micellar morphologies as well, demonstrating its robustness and versatility.

中文翻译：

聚集引发的嵌段共聚物胶束拥挤的冠状链发射

聚集诱导发射（AIE）是近来一个新兴的研究课题，并已被用于监测嵌段共聚物的自组装过程。但是，大多数努力都集中在胶束核心的AIE过程中。在当前的研究中，我们将四苯基乙烯（TPE）掺入到了嵌段共聚物的电晕形成嵌段中。尽管它们的含量低并且TPE基团在冠状链伸展到溶液中时仍保持可溶，但是由于高度拥挤和伸展的冠状链的运动受到限制，在胶束化过程中观察到了显着的荧光发射。与之形成鲜明对比的是，在我们的对照实验中，对TPE组施加了较弱的空间限制，观察到的光致发光可忽略不计。该过程还用于监测胶束化过程并确定胶束化的溶剂条件。最后，我们证明了该方法还可以扩展到其他各种胶束形态，证明了其稳健性和多功能性。

更新日期：2020-07-28

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11