由离子控制的超分子三态开关介导的不相应下游反应
Jung Su Park1, Jihye Park2, Yun Jae Yang1
1Department of Chemistry , Sookmyung Women's University , 100 Cheongpa-ro 47-gil , Yongsan-gu, Seoul 04310 , Republic of Korea.
Journal of the American Chemical Society
|May 30, 2018
概括
这项研究引入了一种合成的超分子系统,作为三态开关,通过不同形式的四基诺二甲 (TCNQ) 控制不同化学反应,如聚合和循环添加.
科学领域:
- 超分子化学
- 化学生物学
- 材料科学
背景情况:
- 生物系统利用化学信使来进行复杂的信号传递.
- 控制单一刺激的多个下游事件是合成系统的一个关键挑战.
研究的目的:
- 设计和描述一种能够进行两叉下游信号的合成超分子结构.
- 通过三度切换实现对不同形式的7,7,8,8-四氨基二甲 (TCNQ) 的控制化学接入.
主要方法:
- 一种基于四法 (TTF) 的宏循环,-TTF-醇[4]的合成.
- 使用四基化盐来诱导中性,电荷转移 (CT) 和电子转移 (ET) 状态之间的可逆切换.
- 使用单晶X射线衍射和溶液相光谱进行表征.
主要成果:
- 开发了一个超分子氧化还原组合作为三态开关.
- 对三种TCNQ形式进行化学控制:释放中性基,阳离子基 (TCNQ•−) 和结合CT.
- 展示了不同的下游反应:由TCNQ•− (ET状态) 触发的烯聚合和由中性TCNQ (无ET状态) 触发的循环添加-逆电循环 (CA-RE).
结论:
- 合成的超分子系统通过调解分叉的下游事件有效地模仿生物信号.
- 三度开关可以精确地控制TCNQ的反应性,从而实现选择性反应途径.
- 这项工作为开发复杂的分子机器和响应性材料开辟了道路.
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