Fluorescence-switching 2-D sheet structure formed by self-assembly of cruciform aromatic amphiphiles†

IF 2.8 3区 化学 Q3 CHEMISTRY, PHYSICAL Soft Matter Pub Date : 2025-01-27 DOI:10.1039/D4SM01542H
Wei Zhang, Yongsheng Li, Tianyi Zheng, Ying Xie, Xianyin Dai and Myongsoo Lee
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Abstract

We report that aromatic amphiphiles based on cruciform aromatic segments self-assemble into 2-D sheet structures in aqueous environments. Notably, the aromatic amphiphile based on a pyrene unit generates fluorescence-switching 2-D sheet structures. In a pH-neutral condition, the sheets show strong excimer emission. However, upon lowering the pH the excimer emission is quenched due to loosely-packed pyrene units. Subsequent return of pH to a neutral condition leads to full recovery of the excimer emission, indicative of fully-reversible fluorescence emission switching.

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十字形芳香两亲体自组装形成的荧光开关二维薄片结构。
我们报告了基于十字形芳香片段的芳香双亲化合物在水环境中自组装成的二维片状结构。值得注意的是,基于芘单元的芳香族双亲化合物会产生荧光切换型二维片状结构。在 pH 值中性的条件下,薄片显示出强烈的准分子发射。然而,当 pH 值降低时,由于芘单元的松散堆积,准分子发射被淬灭。随后,pH 值恢复到中性状态,准分子发射完全恢复,这表明荧光发射切换是完全可逆的。
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来源期刊
Soft Matter
Soft Matter 工程技术-材料科学:综合
CiteScore
6.00
自引率
5.90%
发文量
891
审稿时长
1.9 months
期刊介绍: Soft Matter is an international journal published by the Royal Society of Chemistry using Engineering-Materials Science: A Synthesis as its research focus. It publishes original research articles, review articles, and synthesis articles related to this field, reporting the latest discoveries in the relevant theoretical, practical, and applied disciplines in a timely manner, and aims to promote the rapid exchange of scientific information in this subject area. The journal is an open access journal. The journal is an open access journal and has not been placed on the alert list in the last three years.
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