Dominos-like crystalline phase transformation of fluorescence emitters bearing energy-boosted structure

IF 4.1 3区工程技术 Q2 CHEMISTRY, APPLIED

Dyes and Pigments Pub Date : 2025-04-06 DOI:10.1016/j.dyepig.2025.112808

Qiang Zhao , Xun Fu , Lizhu Dong , Zhaocheng Xu , Jinyi Zhang , Xiaojie Cheng , Bai Chen , Jianfeng Zhao , Dongqing Lin , Man Xu , Linghai Xie

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Abstract

The exploration of molecular dominos-like crystalline phase transformation, based on π-functional optoelectronic molecules, is promising for smart sensor devices and delivering encryption information. Herein, we report an energy-boosted dominos-like crystalline phase transformation through controlling π···π stacking manners of fluorescent molecules, dimethyl 2,5-bis((2,3,4-trifluorophenyl)amino)terephthalate (234-TFAT). Upon solvent vapor atmosphere and thermal condition, yellow-orange-emitted crystals can realize the chain-like crystalline phase transition, where the molecular stacking areas is decreasing one-third from the standing-state to the lying-state π···π stacking mode. Meanwhile, such lying-state π···π stacking mode can achieve the single molecular emission at 542 nm that blue-shifted from 585 nm under the standing-state stacking mode. On this basis, we test the application in visualizing Morse code for message encrypting and deciphering. This research helps us establish universal design principles with energy-boosted supramolecular dominos-like crystalline phase transformation and provides a novel molecular platform for the multi-stimuli responsive functional materials.

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带有能量增强结构的荧光发射体的多米诺骨牌状晶体相变

基于π功能光电分子的分子多米诺骨牌式结晶相变探索有望用于智能传感设备和传递加密信息。在此，我们报告了通过控制荧光分子--2,5-双((2,3,4-三氟苯基)氨基)对苯二甲酸二甲酯（234-TFAT）--的π--π堆叠方式实现的能量增强型多米诺骨牌式结晶相变。在溶剂蒸汽气氛和热条件下，发出橘黄色的晶体可实现链状结晶相变，其中分子堆叠面积从静止态减少三分之一，转为躺态π---π堆叠模式。同时，这种躺态π---π堆叠模式可以实现单分子在 542 nm 处的发射，而站态堆叠模式下的发射波长为 585 nm。在此基础上，我们测试了莫尔斯电码可视化在信息加密和破译中的应用。这项研究帮助我们建立了能量增强型超分子多米诺骨牌式结晶相变的通用设计原理，并为多刺激响应功能材料提供了新的分子平台。

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来源期刊

Dyes and Pigments 工程技术-材料科学：纺织

CiteScore

8.20

自引率

13.30%

发文量

933

审稿时长

33 days

期刊介绍： Dyes and Pigments covers the scientific and technical aspects of the chemistry and physics of dyes, pigments and their intermediates. Emphasis is placed on the properties of the colouring matters themselves rather than on their applications or the system in which they may be applied. Thus the journal accepts research and review papers on the synthesis of dyes, pigments and intermediates, their physical or chemical properties, e.g. spectroscopic, surface, solution or solid state characteristics, the physical aspects of their preparation, e.g. precipitation, nucleation and growth, crystal formation, liquid crystalline characteristics, their photochemical, ecological or biological properties and the relationship between colour and chemical constitution. However, papers are considered which deal with the more fundamental aspects of colourant application and of the interactions of colourants with substrates or media. The journal will interest a wide variety of workers in a range of disciplines whose work involves dyes, pigments and their intermediates, and provides a platform for investigators with common interests but diverse fields of activity such as cosmetics, reprographics, dye and pigment synthesis, medical research, polymers, etc.