Modular supramolecular dimerization of optically tunable extended aryl viologens
| Autor: | Daniel Antón-García, Guanglu Wu, Magdalena Olesińska, Oren A. Scherman, Edina Rosta, Silvia Gómez-Coca, István Szabó |
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| Přispěvatelé: | Antón-García, Daniel [0000-0001-5466-2921], Scherman, Oren A [0000-0001-8032-7166], Apollo - University of Cambridge Repository |
| Rok vydání: | 2019 |
| Předmět: |
3403 Macromolecular and Materials Chemistry
Aqueous solution 34 Chemical Sciences 010405 organic chemistry Chemistry Aryl Supramolecular chemistry Isothermal titration calorimetry Viologen 3405 Organic Chemistry Bioengineering General Chemistry Electron 010402 general chemistry 01 natural sciences 0104 chemical sciences Crystallography chemistry.chemical_compound Molecular recognition Excited state medicine medicine.drug |
| Zdroj: | Olesińska, M, Wu, G, Gómez-Coca, S, Antón-García, D, Szabó, I, Rosta, E & Scherman, O A 2019, ' Modular supramolecular dimerization of optically tunable extended aryl viologens ', Chemical Science, vol. 10, no. 38, pp. 8806-8811 . https://doi.org/10.1039/c9sc03057c Chemical Science |
| DOI: | 10.17863/cam.42585 |
| Popis: | Cucurbit[8]uril (CB[8]) mediated assembly of extended aryl viologens (EVs) into optically tunable dimers is reported for the first time. We show that the modular design and synthesis of a new class of π-conjugated viologen derivatives with rigid aromatic or heteroaromatic bridging units as well as electron donating molecular recognition motifs enable their self-assembly into 2:2 complexes with CB[8]. The quantitative dimerization process involving these two molecular components in an aqueous solution enables excimer-like interactions between closely packed charged guests giving rise to distinct spectroscopic behavior. The nature of these dimers (CB[8]2·(EV[X]R)2) in the ground and excited states was characterized by NMR, isothermal titration calorimetry, and steady-state spectroscopic measurements. |
| Databáze: | OpenAIRE |
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