Tuning the reversible mechanochromic luminescence of triphenylethylenes by rational introduction of functionalized thiophenes substituents

IF 4 2区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Molecular Structure Pub Date : 2024-11-17 DOI:10.1016/j.molstruc.2024.140771

Yue Zhang , Can Wang , Yuan Zhou , Yun Yu , Wei Shu , Yunfeng Chen

引用次数: 0

Abstract

Four triphenylethylene derivatives have been designed and synthesized in this work. Compared to traditional tetraphenylethene (TPE) compounds, it was found that the obtained compounds could exhibit potential isomerism in chemical and spatial structures due to their unique asymmetry, which revealed that the subtle structural changes directly influence the packing modes of the compounds in aggregated state, tuning their mechanochromic luminescence properties. Moreover, the emission wavelength of mono-substituted triphenylethylene derivatives showed a blue-shift trend when stimulated by external mechanical forces. After fuming or recrystallization, they can recover to long-wavelength emission. Among them, compound TTC-2 exhibited the most significant color changes and the largest wavelength variation.

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通过合理引入功能化噻吩取代基调谐三苯基乙烯的可逆机械变色发光特性

这项研究设计并合成了四种三苯基乙烯衍生物。与传统的四苯基乙烯（TPE）化合物相比，研究发现所获得的化合物由于其独特的非对称性，在化学结构和空间结构上表现出潜在的异构性，这揭示了微妙的结构变化会直接影响化合物在聚集状态下的堆积模式，从而调整其机械致色发光特性。此外，在外部机械力的刺激下，单取代三苯乙烯衍生物的发射波长呈蓝移趋势。在发烟或重结晶后，它们可以恢复长波长发射。其中，化合物 TTC-2 的颜色变化最明显，波长变化也最大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Molecular Structure 化学-物理化学

CiteScore

7.10

自引率

15.80%

发文量

2384

审稿时长

45 days

期刊介绍： The Journal of Molecular Structure is dedicated to the publication of full-length articles and review papers, providing important new structural information on all types of chemical species including: • Stable and unstable molecules in all types of environments (vapour, molecular beam, liquid, solution, liquid crystal, solid state, matrix-isolated, surface-absorbed etc.) • Chemical intermediates • Molecules in excited states • Biological molecules • Polymers. The methods used may include any combination of spectroscopic and non-spectroscopic techniques, for example: • Infrared spectroscopy (mid, far, near) • Raman spectroscopy and non-linear Raman methods (CARS, etc.) • Electronic absorption spectroscopy • Optical rotatory dispersion and circular dichroism • Fluorescence and phosphorescence techniques • Electron spectroscopies (PES, XPS), EXAFS, etc. • Microwave spectroscopy • Electron diffraction • NMR and ESR spectroscopies • Mössbauer spectroscopy • X-ray crystallography • Charge Density Analyses • Computational Studies (supplementing experimental methods) We encourage publications combining theoretical and experimental approaches. The structural insights gained by the studies should be correlated with the properties, activity and/ or reactivity of the molecule under investigation and the relevance of this molecule and its implications should be discussed.