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Journal Article

Switchable Solubility of Azobenzene-Based Bolaamphiphiles

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Pagel,  Kevin
Freie Universität Berlin, Institute of Chemistry and Biochemistry;
Molecular Physics, Fritz Haber Institute, Max Planck Society;

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Citation

Urner, L. H., Schade, B., Schulze, M., Folmert, K., Haag, R., & Pagel, K. (2019). Switchable Solubility of Azobenzene-Based Bolaamphiphiles. ChemPhysChem, 20(13), 1690-1697. doi:10.1002/cphc.201900334.


Cite as: https://hdl.handle.net/21.11116/0000-0003-BDF4-5
Abstract
The ability to design amphiphiles with predictable solubility properties is of everlasting interest in supramolecular chemistry. Relevant structural parameters include the hydrophobic–hydrophilic balance and structural flexibility. In this work, we investigate the water solubility of azobenzene‐based triglycerol bolaamphiphiles (TGBAs). In particular, we analyzed the structural effects of backbone hydrophobicity, flexibility, and cis/trans isomerization on the water solubility of a subset of five TGBAs. This leads to the first example of a non‐ionic bolaamphiphile whose water solubility can be changed by irradiation with light. The underlying kinetics were monitored using liquid chromatography and a closer analysis of the underlying aggregation processes provides a mechanistic understanding of the light‐driven dissolution process. We anticipate that the results obtained will help to engineer bolaamphiphiles with predictable solution properties in the future.