Creation of Liquid Crystal Glasses with Controllable Light-Emitting Properties

具有可控发光性能的液晶玻璃的研制

• 批准号: 13640573
• 负责人: KANAZAWA Akihiko
• 金额: $ 2.05万
• 依托单位: Yamagata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13640573/
• 关键词: Onium salts; rare-earth metal ions; Thin films; Complexes; Light-emitting materials; Ordered glasses; Liquid crystals; π-conjugation; 二次元構造

Liquid-crystalline behavior and optical property of novel ionic liquid crystals, which are surfactant complexes containing rare-earth ions, were evaluated by differential scanning calorimetry, polarizing optical microscopy, X-ray diffractometry, absorption spectroscopy, and fluorescence spectroscopy. The rare-earth complexes were found to show a smectic A (SA) phase in which a homeotropic structure was formed spontaneously. It is significant that the rare-earth complexes exhibit a stable liquid-crystalline phase and a simple phase transition behavior in comparison with the parent compounds without rare-earth ions. In addition, it was demonstrated that the complexes form an anisotropic glasses consisting of the two-dimensional layers of the hexagonally packed rare-earth ions. Such rare-earth-containing liquid crystals can be expected to act as new light-emitting materials in optoelectronic device applications.

采用差示扫描量热法、偏光显微镜、X射线衍射、吸收光谱和荧光光谱等方法研究了新型离子液晶的液晶行为和光学性质。发现稀土配合物显示出近晶A（SA）相，其中自发形成垂面结构。与不含稀土离子的母体化合物相比，稀土配合物具有稳定的液晶相和简单的相变行为。此外，研究表明，配合物形成了由二维层状稀土离子六方堆积组成的各向异性玻璃。这种含稀土的液晶有望作为新型发光材料应用于光电子器件。

项目成果

S. Yoneyama, O. Tsutsumi, A. Shishido, A. Kanazawa, T. Shiono, and T. Ikeda: "Photochemical Phase Transition Behavior of Polymer Liquid Crystals with ortho-Substituted Azobenzene."Mol. Cryst. Liq. Cryst.. in press.

S. Yoneyama、O. Tsutsumi、A. Shishido、A. Kanazawa、T. Shiono 和 T. Ikeda：“聚合物液晶与邻位取代偶氮苯的光化学相变行为”。

A. Kanazawa, T. Ikeda, and J. Abe: "Supramolecular Polar Thin Films Built by Surfactant Liquid Crystals : Polarization-Tunable Multilayer Self-Assemblies with In-Plane Ferroelectric Ordering of Ion-Based Dipoles."J. Am. Chem. Soc.. 123. 1748-1754 (2001)

A. Kanazawa、T. Ikeda 和 J. Abe：“由表面活性剂液晶构建的超分子极性薄膜：具有离子偶极子面内铁电排序的偏振可调多层自组装体。”

G. -H. Kim, S. Enomoto, A. Kanazawa, T. Shiono, T. Ikeda, and L. -S. Park: "Application of Photosensitive Polyimides as Alignment Layer to Optical Switching Devices of Nematic Liquid Crystal."Liq. Cryst.. 28. 271-277 (2001)

G.-H.

N. Kanayama, O. Tsutsumi, A. Kanazawa, and T. Ikeda: "Distinct Thermodynamic Behaviour of a Mesomorphic Gold Nanoparticle Covered With a Liquid-Crystalline Compound."Chem. Commun.. 2640-2641 (2001)

N. Kanayama、O. Tsutsumi、A. Kanazawa 和 T. Ikeda：“覆盖有液晶化合物的介晶金纳米颗粒的独特热力学行为”。

H. Zhang, S. Shiino, A. Kanazawa, O. Tsutsumi, T. Shiono, T. Ikeda, and Y. Nagase: "X-Ray Measurements of an Oligothiophene Containing Acetylene Linkage."Synth. Met.. 126. 11-18 (2002)

H. 张、S. Shiino、A. Kanazawa、O. Tsutsumi、T. Shiono、T. Ikeda 和 Y. Nagase：“含乙炔键的低聚噻吩的 X 射线测量”。