Weak Links To Differentiate Weak Bonds: Size-Selective Response of π-Conjugated Macrocycle Gels to Ammonium Ions

Kang Suk-il; Lee Milim; Lee Dongwhan

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Weak Links To Differentiate Weak Bonds: Size-Selective Response of π-Conjugated Macrocycle Gels to Ammonium Ions

机译：弱链接以区分弱键：π共轭大环凝胶对铵离子的尺寸选择性响应

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Molecular-level host-guest interactions can drive gel-to-sol phase transitions of the bulk material. Using supramolecular gels constructed from pi-conjugated aza-crown macrocycles, we have investigated the effects of guest chemical structures on the kinetics of gel disassembly. While ammonium ions bind only weakly to the individual macrocycles in solution, gel-to-sol transitions of self-assembled macrocycles occur readily under ambient conditions. This net signal amplification process was monitored conveniently by time-dependent spectroscopic studies to reveal a straightforward correlation between the response rate and shape/size of the guest species. Well-designed weak links thus respond to subtle differences in weak bonds and translate them into visually discernible macroscopic signaling events.

机译：分子水平的主体与客体之间的相互作用可以驱动散装材料的凝胶到溶胶相变。使用由π-共轭的氮杂-皇冠大环构建的超分子凝胶，我们已经研究了客体化学结构对凝胶分解动力学的影响。尽管铵离子仅微弱地与溶液中的各个大环结合，但自组装大环的凝胶到溶胶转变在环境条件下容易发生。通过时变光谱研究可方便地监控此净信号放大过程，以揭示响应速率与客体形状/大小之间的直接相关性。因此，设计良好的薄弱环节可以对薄弱环节的细微差异做出反应，并将其转化为视觉上可识别的宏观信号事件。

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来源
《Journal of the American Chemical Society》 |2019年第14期|5980-5986|共7页
作者
Kang Suk-il; Lee Milim; Lee Dongwhan;
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作者单位

Seoul Natl Univ, Dept Chem, 1 Gwanak Ro, Seoul 08826, South Korea;

Seoul Natl Univ, Dept Chem, 1 Gwanak Ro, Seoul 08826, South Korea;

Seoul Natl Univ, Dept Chem, 1 Gwanak Ro, Seoul 08826, South Korea;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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1. Weak Links To Differentiate Weak Bonds: Size-Selective Response of π-Conjugated Macrocycle Gels to Ammonium Ions [J] . Kang Suk-il, Lee Milim, Lee Dongwhan Journal of the American Chemical Society . 2019,第14期

机译：弱链接以区分弱键：π-缀合的大环凝胶到铵离子的尺寸选择性响应
2. Highly enhanced adsorption of methyl blue on weakly cross-linked ammonium-functionalized hollow polymer particles [J] . Applied Surface Science . 2020,第Mara1期

机译：甲基蓝在弱交联的铵官能化空心聚合物颗粒上的吸附增强
3. Systematic Study of the Role of Ligand Structure in the Formation of Homobinuclear Rhodium Macrocycles Formed via the Weak-Link Approach [J] . Bradley J.Holliday, Pirmin A.Ulmann, Chad A.Mirkin, Organometallics . 2004,第8期

机译：配体结构在通过弱连接法形成的同核铑大环化合物形成中的作用的系统研究
4. Numerical Simulation on Thermal Response for Dynamic Non-Destructive Detection of Weak Bonds in Carbon Fiber Reinforced Polymer [C] . Y. L. Hor, H. S. Chu, V. P. Bui Progress in electromagnetics research symposium . 2018

机译：动态无损检测碳纤维增强聚合物中弱键的热响应数值模拟
5. The "weak-link" approach to the synthesis of inorganic macrocycles and three-dimensional structures [D] . Farrell, Joshua Richard. 1999

机译：无机大环和三维结构合成的“弱链接”方法
6. Water-Soluble Macrocycles Synthesized via the Weak-Link Approach [O] . Michael J. Wiester, Chad A. Mirkin -1

机译：通过弱连接方法水溶性大环合成
7. A Systematic Study of the Role of Ligand Structure in the Formation of Homobinuclear Rhodium Macrocycles Formed via the Weak-Link Approach [O] . -1

机译：通过弱链接方法形成配体结构在形成冠状核核宏γ的形成中的系统研究
8. Study of Influencing Factors on the Tensile Response of a Titanium Matrix Composite With Weak Interfacial Bonding [R] . Goldberg, R. K. , Arnold, S. M. 2000

机译：弱界面粘接钛基复合材料拉伸响应影响因素的研究

Weak Links To Differentiate Weak Bonds: Size-Selective Response of π-Conjugated Macrocycle Gels to Ammonium Ions

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