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Chiral AIEgens - Chiral recognition, CPL materials and other chiral applications

机译：手性亚芳 - 手性识别，CPL材料和其他手性应用

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摘要

Due to immense potential in using as chemo/biosensors and solid emitters, aggregation-induced emission (AIE) phenomenon is attracting huge interest in scientific community. After endowed with chirality, the resultant chiral AIE luminogens (AIEgen), just like a tiger with added wings, can display more and stronger promising functionalities. Moreover, many classic luminophores can be transformed into AIEgens from notorious aggregation-caused quenching (ACQ) compounds as soon as they are attached with chiral groups. Compared with other chiral fluorescent receptors and chiral emitter, chiral AIEgens have displayed unique and outstanding advantages. Firstly, chiral AIEgen can differentiate two enantiomers of chiral analyte by 1.68 x 10(4) fold difference and get a chiral magnification up to 2.5 x 10(3) times due to aggregation. In addition, two enantiomers of up to 18 chiral carboxylic acids can be recognized just by using only one chiral AIEgen receptor and enantiomeric excess (ee) of chiral analytes at uM level can be measured. Furthermore, accurate ee analysis was carried out for the first time from fluorescence wavelength change rather than intensity change of the chiral AIEgen receptor. Therefore, the chiral AIEgens show unprecedentedly high selectivity, high sensitivity, high applicability, and high accuracy. Secondly, in the area of organic circularly polarized luminescence (CPL) materials, the CPL dissymmetry factor (g(lum)) of chiral AIEgen can get to 1.42 that is near to the theoretical value of 2, making a breakthrough progress while the vertical bar g(lum)vertical bar of previous organic luminophores is generally between 10(-5) and 10(-2). Furthermore, the highly efficient circularly polarized organic light-emitting diodes (CPOLEDs) are constructed for the first time by chiral AIEgens. Thirdly, chiral AIEgens enable novel display technology under different lighting conditions to be possible. More importantly, due to AIE effect, AIEgens are very beneficial for disclosing the mechanism of chiral transfer and magnification between molecules, which is thought to be the key for evolution of homochirality in natural world and preparation of chiral materials with hierarchical structures. For the above reason, chiral AIEgens have been brought to extensive attention and a large number of research works about them are reported. To take an overall view on chiral AIEgens and facilitate the development of chiral AIEgens, it is necessary to make a full review on the chiral AIEgens. This review covers the following contents: (1) construction of chiral AIEgens including propeller-like chiral AIEgens, chiral AIEgens with optically pure groups, polymer chiral AIEgens and supramolecular chiral AIEgen system; (2) chiral recognition and ee determination of chiral carboxylic acids, chiral amines, alpha-amino acids, and chiral neutral molecules by chiral AIEgens; (3) performance of chiral AIEgens in circular dichroism (CD), CPL and CPOLEDs; (4) other versatile application researches related to chiral AIEgens. (C) 2020 Elsevier B.V. All rights reserved.
机译：由于使用作为化疗/生物传感器和固体发射器的巨大潜力，聚集诱导的排放（AIE）现象是吸引科学界的巨大兴趣。在赋予手性患者后，所得手性艾滋病素（AIEGEN），就像一只带有翅膀的老虎一样，可以展示更多和更强的有希望的功能。此外，在用手性基团附着时，许多经典发光小孔可以通过臭名昭着的聚集导致猝灭（ACQ）化合物转化为抗血清。与其他手性荧光受体和手性发射器相比，手性侧血管表现出独特而突出的优势。首先，手性Aiegen可以将手性分析物的两个对映体分化为1.68×10（4）倍差异，并且由于聚集而获得高达2.5×10（3）次的手性放大率。另外，可以仅测量在UM水平下仅使用一个手性AIEGEN受体和对映体过量（EE）的手性AIEGEN受体和对映体过量（EE）可以识别出高达18个手性羧酸的两个对映体。此外，首次从荧光波长变化而不是手性Aiegen受体的强度变化进行精确的EE分析。因此，手性贫血面板展示前所未有的选择性高，灵敏度高，适用性高，精度高。其次，在有机圆形偏振发光（CPL）材料的区域中，手性AIEGEN的CPL不对称因子（G（lum））可以获得1.42，靠近理论值2，在垂直条时取得突破性先前有机发光体的G（LUM）垂直杆通常在10（-5）和10（-2）之间。此外，高效的圆偏振有机发光二极管（CPOLED）首次通过手性亚血管构建。第三，手性亚宫在不同的照明条件下使新颖的显示技术能够成为可能。更重要的是，由于AIE效应，Aiegens对披露分子的手性转移和放大倍率的机制非常有益，这被认为是自然世界中销售的关键，以及具有等级结构的手性材料的制备。对于上述原因，手性贫吉斯被引起了广泛的关注，并报告了大量的研究工作。为了对手性亚宫进行整体观点并促进手表艾基的发展，有必要对手性艾格斯进行全面审查。本综述涵盖以下内容：（1）构建手性侧血管，包括螺旋桨手性贫血，手性透镜，具有光学纯群，聚合物手性贫血和超分子手性Aiegen系统; （2）手性识别和EE测定手性羧酸，手性胺，α-氨基酸和手性中性分子的手性亚胺; （3）循环二分态（CD），CPL和CPOLED中的手性侧缩的表现; （4）与手性亚宫有关的其他多功能应用研究。 （c）2020 Elsevier B.v.保留所有权利。

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  • 来源
    《Coordination chemistry reviews》 |2020年第8期|213329.1-213329.35|共35页
  • 作者

    Hu Ming; Feng Hai-Tao; Yuan Ying-Xue; Zheng Yan-Song; Tang Ben Zhong;

  • 作者单位

    Huazhong Univ Sci & Technol Sch Chem & Chem Engn Key Lab Mat Chem Energy Convers & Storage Minist Educ Wuhan Peoples R China;

    Baoji Univ Arts & Sci Coll Chem & Chem Engn Baoji AIE Res Ctr Shaanxi Key Lab Phytochem Baoji Shaanxi Peoples R China;

    Huazhong Univ Sci & Technol Sch Chem & Chem Engn Key Lab Mat Chem Energy Convers & Storage Minist Educ Wuhan Peoples R China;

    Huazhong Univ Sci & Technol Sch Chem & Chem Engn Key Lab Mat Chem Energy Convers & Storage Minist Educ Wuhan Peoples R China;

    Hong Kong Univ Sci & Technol Dept Chem Kowloon Clear Water Bay Hong Kong Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Chiral AIE compounds; Chiral recognition; Enantiomer excess analysis; Circularly polarized luminescence; Chiral materials;

    机译：手性AIE化合物;手性识别;对映异构体过量分析;圆偏振光;手性材料;

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