一个多响应的铁基奇拉尔过度拥挤的基扭曲液晶
Maximilian Fellert1, Robert Hein1, Alexander Ryabchun1
1Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 3, 9747 AG, Groningen, The Netherlands.
Angewandte Chemie (International ed. in English)
|September 11, 2024
概括
研究人员从铁-英达构建块开发了一种新型的合开关 (FcD). 这种开关表现出多刺激的响应性,使液晶特性通过氧化还原和异构化显著调整.
科学领域:
- 超分子化学 超分子化学
- 材料科学 材料科学 材料科学
- 有机合成 有机合成
背景情况:
- 可逆性调制对于液晶 (LC) 和分子机器等先进应用至关重要.
- 合成具有 enantioselective,可切换的分子与多个奇拉元素提出了重大挑战.
研究的目的:
- 开发一种新的,易于合成的,多刺激响应的性开关.
- 为了研究合成分子的可切换 (心脏) 光学特性.
- 为了探索其作为胆固醇液晶中的性剂的应用.
主要方法:
- 一个enantiopure平面合体ferrocene-indanone构建块的立体选择性二元化.
- 由此产生的二元体 (FcD) 的结构性和立体化学性质的表征.
- 研究热/光化学E/Z异构和可逆氧化还原行为 (单离子和二离子状态).
- 评估FcD作为胆固醇液晶中的性剂及其对氧化的反应.
主要成果:
- 多刺激响应二分体 (FcD) 的高产合成,具有受控的几何和性.
- FcD表现出可逆的热/光化学E/Z异构和可调节的氧化还原状态.
- 在LC中,FcD作为一种性剂,具有13μm-1的螺旋扭转功率 (HTP),在氧化后降至接近零.
- 氧化会导致LC反射颜色的显著氧化还原调节,长度高达84nm.
结论:
- FcD的简单合成使其成为先进分子机器的有希望的构建模块.
- 对于基于液晶的材料,FcD提供了前所未有的氧化还原调节能力.
- 这项工作为设计多刺激响应性性材料提供了一个新的平台.
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