Journal of Physical Chemistry Letters
Journal of Physical Chemistry Letters
5 years ago

Steering Self-Assembly of Amphiphilic Molecular Nanostructures via Halogen Exchange

Steering Self-Assembly of Amphiphilic Molecular Nanostructures via Halogen Exchange
Linda E. Franken, Maxim S. Pshenichnikov, Anna S. Bondarenko, Thomas L. C. Jansen, Björn Kriete, Adriaan J. Minnaard, Varsha R. Jumde, Jasper Knoester
In the field of self-assembly, the quest for gaining control over the supramolecular architecture without affecting the functionality of the individual molecular building blocks is intrinsically challenging. By using a combination of synthetic chemistry, cryogenic transmission electron microscopy, optical absorption measurements, and exciton theory, we demonstrate that halogen exchange in carbocyanine dye molecules allows for fine-tuning the diameter of the self-assembled nanotubes formed by these molecules, while hardly affecting the molecular packing determined by hydrophobic/hydrophilic interactions. Our findings open a unique way to study size effects on the optical properties and exciton dynamics of self-assembled systems under well-controlled conditions.

Publisher URL: http://dx.doi.org/10.1021/acs.jpclett.7b00967

DOI: 10.1021/acs.jpclett.7b00967

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