Self-assembled blue-light emitting materials for their liquid crystalline and OLED applications: from a simple molecular design to supramolecular materials,Molecular Systems Design & Engineering

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Self-assembled blue-light emitting materials for their liquid crystalline and OLED applications: from a simple molecular design to supramolecular materials
Molecular Systems Design & Engineering ( IF 3.2 ) Pub Date : 2020-11-04 , DOI: 10.1039/d0me00117a
Vinay S. Sharma _{1,

2,

3,

4,

5} , Anuj S. Sharma _{1,

5,

6,

7,

8} , Nikhil K. Agarwal _{1,

2,

3,

4,

5} , Priyanka A. Shah _{1,

5,

6,

7,

8} , Pranav S. Shrivastav _{1,

5,

6,

7,

8}

Affiliation

This paper reports the first fluorescent supramolecular columnar liquid crystals derived from chalcone-biphenyl amine-functionalized on the lower rim of calixarene core with a good temperature range. The structural characterization and possible conformation of these supramolecular materials were studied by FT-IR, ¹H NMR, ¹³C NMR and HRMS spectroscopic techniques. The photophysical and electrochemical properties were investigated by UV-visible spectrophotometry and cyclic voltammetry, respectively. All the synthesized materials (7a–7d) showed blue-light emission in solution, as well as in thin films, with good quantum yields. The number of peripheral alkoxy side chains substituted on the terminal position affected the thermal durability and stability of the calixarene derivatives. These supramolecules showed columnar self-assembly and stabilized mesophase with good thermal stability. The application of these chalcone ester-based supramolecular columnar liquid crystalline materials was tested by fabricating efficient blue organic light-emitting diodes (OLEDs) with either neat or doped materials.

中文翻译：

用于液晶和OLED应用的自组装蓝光发射材料：从简单的分子设计到超分子材料

本文报道了首个由查立酮-联苯胺官能化在杯芳烃核下缘上的荧光超分子柱状液晶，具有良好的温度范围。通过FT-IR，¹ H NMR，¹³ C NMR和HRMS光谱技术研究了这些超分子材料的结构表征和可能的构象。分别通过紫外可见分光光度法和循环伏安法研究了光物理性质和电化学性质。所有合成材料（7a–7d）在溶液以及薄膜中显示蓝光发射，并具有良好的量子产率。在末端位置上取代的外围烷氧基侧链的数目影响杯芳烃衍生物的热耐久性和稳定性。这些超分子显示出柱状自组装和稳定的中间相，具有良好的热稳定性。这些查尔酮酯类超分子柱状液晶材料的应用通过用纯净或掺杂材料制造高效的蓝色有机发光二极管（OLED）进行测试。

更新日期：2020-11-27

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