照片可控的HP2O73-的结合和释放使用基于阿佐的智能宏循环
Shenglun Xiong1, Yi Zhang1, Yunqi Jiang1
1State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, No. 2 Lushan Road (S), Yuelu District, Changsha 410082, P. R. China. heqing85@hnu.edu.cn.
概括
研究人员设计了一种新的宏观循环,可以随着光线的变化而改变形状. 这允许控制酸盐离子的捕获和释放,证明了光响应分子识别.
科学领域:
- 超分子化学 超分子化学
- 摄影化学的使用.
- 分析化学 分析化学
背景情况:
- 基于阿佐的宏循环对于分子识别有价值.
- 可光切换系统为绑定事件提供动态控制.
- 对酸盐等离子的选择性检测在各种领域至关重要.
研究的目的:
- 为了合成和描述一种含有亚博的新型宏循环.
- 为了研究宏观循环的光异构化行为.
- 评估宏循环对可光控制的酸盐离子识别能力.
主要方法:
- 含有亚博的宏循环的设计和合成 1.
- 用光辐射研究来诱导跨cis异体化.
- 有约束力的研究来评估酸盐离子识别.
- 用于表征的光谱技术.
主要成果:
- 合成的宏循环1在照射后经历了100%的跨向光异构化.
- 宏观循环表现出对酸盐 (HP2O73-) 的选择性结合.
- 酸盐的结合和释放通过光辐射可逆控制.
结论:
- 一个新的可光切换的宏循环已经成功合成.
- 宏观循环证明了高效和可逆的光控制识别酸盐.
- 该系统为光驱感应和分离技术提供了潜力.
相关概念视频
Photochemical Electrocyclic Reactions: Stereochemistry
1.8K
The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation
Selection Rules: Photochemical Activation
1.8K
Cycloaddition Reactions: MO Requirements for Photochemical Activation
2.1K
Some cycloaddition reactions are activated by heat, while others are initiated by light. For example, a [2 + 2] cycloaddition between two ethylene molecules occurs only in the presence of light. It is photochemically allowed but thermally forbidden.
2.1K
Thermal and Photochemical Electrocyclic Reactions: Overview
2.4K
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
2.4K
Cycloaddition Reactions: MO Requirements for Thermal Activation
3.6K
Thermal cycloadditions are reactions where the source of activation energy needed to initiate the reaction is provided in the form of heat. A typical example of a thermally-allowed cycloaddition is the Diels–Alder reaction, which is a [4 + 2] cycloaddition. In contrast, a [2 + 2] cycloaddition is thermally forbidden.
3.6K


