Dokument: Visible‐Light Switchable Rings and Chains in Dynamic Covalent Imine Chemistry
| Titel: | Visible‐Light Switchable Rings and Chains in Dynamic Covalent Imine Chemistry | |||||||
| URL für Lesezeichen: | https://docserv.uni-duesseldorf.de/servlets/DocumentServlet?id=69735 | |||||||
| URN (NBN): | urn:nbn:de:hbz:061-20250526-121302-3 | |||||||
| Kollektion: | Publikationen | |||||||
| Sprache: | Englisch | |||||||
| Dokumententyp: | Wissenschaftliche Texte » Artikel, Aufsatz | |||||||
| Medientyp: | Text | |||||||
| Autoren: | Voss, Jona [Autor] Hartmann, Yannic [Autor] Nieland, Esther [Autor] Mix, Andreas [Autor] Schmidt, Bernd M. [Autor] | |||||||
| Dateien: |
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| Beschreibung: | The self-assembliy of red-light switchable, functionalised ortho-difluoroazobenzene isomers E-/Z-A with aliphatic diamines exhibits an alternating match/mismatch behaviour depending
on the diamine’s chain length. While even-numbered diamines exclusively form imine macrocycles with the Z-configured azobenzene isomer, odd-numbered diamines form photoswitchable, defined macrocycles. The formation of Z,Z-A 2 X 2-type macrocycles was demonstrated with butane-1,4- (B) and hexane-1,6-diamine (H), while additionally E,E-A 2 X 2-type macrocycles were obtained with propane-1,3- (Pr), pentane-1,5-diamine (Pe), and diethylene glycol bisamine (O), validated by single-crystal X-ray structures of E,E-A 2 Pr 2 and E,E-A 2 O2. The observed reactivity differences arise from the preferred conformations of the flexible diamines in solution, which alternate predictably with odd and even numbers of methylene groups, investigated by 19 F-DOSY NMR experiments, MALDI-MS measurements, and UV/Visspectroscopy. These findings provide detailed insight into photoresponsive self-assembled systems and highlight the potential of azobenzenes in dynamic covalent chemistry, offering new opportunities for controlling structure and function in adaptive materials. | |||||||
| Rechtliche Vermerke: | Originalveröffentlichung:
Voss, J., Hartmann, Y., Nieland, E., Mix, A., & Schmidt, B. M. (2025). Visible‐Light Switchable Rings and Chains in Dynamic Covalent Imine Chemistry. Chemistry - a European Journal, 31(27), Article e202501047. https://doi.org/10.1002/chem.202501047 | |||||||
| Lizenz: |  Dieses Werk ist lizenziert unter einer Creative Commons Namensnennung 4.0 International Lizenz | |||||||
| Fachbereich / Einrichtung: | Mathematisch- Naturwissenschaftliche Fakultät | |||||||
| Dokument erstellt am: | 26.05.2025 | |||||||
| Dateien geändert am: | 26.05.2025 |
