Molecular Engineering of Bis(triphenylamine)-Modified Fluorene Luminophore for Immensely Enriching Anisotropic Force-Triggered High-Contrast Tricolor Fluorescent Molecular Switches Library

IF 7.6 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Chemical Science Pub Date : 2025-06-10 DOI:10.1039/d5sc02314a

Zhao Chen, Yijie Zou, Ya Yin, Dian-Dian Deng, Yue Yang, Congbin Fan, Shouzhi Pu, Gang Liu

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引用次数: 0

Abstract

The preparation of anisotropic mechanical force-triggering high-contrast tricolor fluorescent solid switches is very significative yet extremely challenging. Herein, we report a high-efficiency molecular engineering strategy to develop mechanochromic compounds capable of showing infrequent contrasting three-color fluorescence switching feature. Notably, 14 new symmetric fluorescent molecules by introducing a variety of substituents on either side of the central organic moiety involving 4,4'-((9H-fluoren-9-ylidene)methylene)bis(N,N-diphenylaniline) are successfully obtained, and 10 new fluorogenic compounds have been discovered to exhibit seldom-observed tricolored mechanofluorochromic phenomena. Impressively, among them, 8 luminogens demonstrate exceptionally scarce anisotropic force-triggered high-contrast three-color fluorescence responses, which is a commendable achievement, fully verifying the effectiveness of our molecular engineering strategy presented in this study. Furthermore, based on two newly developed representational mechanically responsive tricolor fluorescence switches, three advanced information anticounterfeiting systems are skillfully constructed.

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用于丰富各向异性力触发高对比度三色荧光分子开关库的双（三苯胺）修饰芴发光团的分子工程

各向异性机械力触发高对比度三基色荧光固体开关的制备具有重要意义，但也极具挑战性。在此，我们报告了一种高效的分子工程策略来开发能够显示罕见对比三色荧光开关特征的机械变色化合物。值得注意的是，通过在中心有机部分两侧引入各种取代基，成功地获得了14个新的对称荧光分子，包括4,4'-（（9h -芴-9-基）亚甲基）双（N，N-二苯基苯胺），并发现了10个新的荧光化合物，表现出罕见的三色机械荧光现象。令人印象深刻的是，其中8个发光源表现出异常稀少的各向异性力触发的高对比度三色荧光响应，这是一个值得称赞的成果，充分验证了我们在本研究中提出的分子工程策略的有效性。此外，基于两种新开发的代表性机械响应三色荧光开关，巧妙地构建了三种先进的信息防伪系统。

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来源期刊

Chemical Science CHEMISTRY, MULTIDISCIPLINARY-

CiteScore

14.40

自引率

4.80%

发文量

1352

审稿时长

2.1 months

期刊介绍： Chemical Science is a journal that encompasses various disciplines within the chemical sciences. Its scope includes publishing ground-breaking research with significant implications for its respective field, as well as appealing to a wider audience in related areas. To be considered for publication, articles must showcase innovative and original advances in their field of study and be presented in a manner that is understandable to scientists from diverse backgrounds. However, the journal generally does not publish highly specialized research.