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首页> 外文期刊>Chemistry: A European journal >Flavylium Salts: A Blooming Core for Bioinspired Ionic Liquid Crystals
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Flavylium Salts: A Blooming Core for Bioinspired Ionic Liquid Crystals

机译：面料盐：用于生物悬浮的离子液晶的盛开核心

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摘要

Thermotropic ionic liquid crystals based on the flavylium scaffold have been synthesized and studied for their structure-properties relationship for the first time. The mesogens were probed by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction (XRD). Low numbers of alkoxy side chains resulted in smectic (SmA) and lamello-columnar (Lam_(Col)) phases, whereas higher substituted flavylium salts showed Col_(ro) as well as ordered and disordered columnar (Col_(ho), Col_(hd)) mesophases. Mesophase width ranged from 13 K to 220 K, giving access to room temperature liquid crystals. The optical properties of the synthesized compounds were probed towards absorption and emission properties. Strong absorption with maxima between 444 and 507 nm was observed, and some chromophores were highly emissive with quantum yields up to 99%. Ultimately, mesogenic and dye properties were examined by temperature-dependent emissive experiments in the solid state.
机译：已经合成了基于石膏支架的热致散离子液晶并研究了它们的结构性质关系。 通过差示扫描量热法（DSC），偏振光显微镜（POM）和X射线衍射（XRD）探测霉菌。 低数量的烷氧基侧链导致次晶（SMA）和层状柱（LAM_（COL））相，而高级取代的石鳞盐显示COL_（RO）以及有序和无序的柱状（COL_（HO），COL_（HD） ））mesophases。 中间相宽度为13 k至220 k，进入室温液晶。 探测合成化合物的光学性质朝向吸收和排放性能。 观察到具有444和507nm之间的最大值的强烈吸收，一些发射高度发射率高达99％。 最终，通过固态的温度依赖性发光实验检查介晶和染料性质。

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  • 来源
    《Chemistry: A European journal》 |2019年第56期|共15页
  • 作者

    Robert Forschner; Jakob Knelles; Korinna Bader; Carsten Meller; Wolfgang Frey; Andreas K?hn; Yann Molard; Frank Giesselmann; Sabine Laschat;

  • 作者单位

    Institut fer Organische Chemie Universit?t Stuttgart Pfaffenwalding 55 70569 Stuttgart (Germany);

    Institut fer Organische Chemie Universit?t Stuttgart Pfaffenwalding 55 70569 Stuttgart (Germany);

    Institut fer Organische Chemie Universit?t Stuttgart Pfaffenwalding 55 70569 Stuttgart (Germany);

    Institut fer Physikalische Chemie Universit?t Stuttgart Pfaffenwalding 55 70569 Stuttgart (Germany);

    Institut fer Organische Chemie Universit?t Stuttgart Pfaffenwalding 55 70569 Stuttgart (Germany);

    Institut fer Theoretische Chemie Universit?t Stuttgart Pfaffenwaldring 55 70569 Stuttgart (Germany);

    CNRS ISCR-UMR6226 ScanMAT-UMS 2001 University Rennes 35000 Rennes (France);

    Institut fer Physikalische Chemie Universit?t Stuttgart Pfaffenwalding 55 70569 Stuttgart (Germany);

    Institut fer Organische Chemie Universit?t Stuttgart Pfaffenwalding 55 70569 Stuttgart (Germany);

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 应用化学;
  • 关键词

    fluorescence; ionic liquid crystals; self-assembly; UV/Vis spectroscopy; X-ray diffraction;

    机译：荧光;离子液晶;自组装;UV / Vis光谱;X射线衍射;

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