Diversity of morphological patterns in supramolecular polymers formed from the amphiphilic oligomers of pyrenes

Vybornyi, Mykhailo; Häner, Robert (11 September 2014). Diversity of morphological patterns in supramolecular polymers formed from the amphiphilic oligomers of pyrenes. In: Swiss Chemical Society Fall Meeting 2014. University of Zurich. 11.09.2014.

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Herein we demonstrate that a substitution type of the pyrene in short amphiphilic oligomers determines a morphology of the assemblies formed. Thus, 1.6- and 2.7-linkages lead to a formation of micrometer-sized 2D supromolecular polymers with a constant thickness 2 nm (pictures A and B). These assemblies possess a high degree of an internal order: the interior consists of hydrophobic pyrenes and alkyl chains, whereas the exterior exists as a net of hydrophilic negatively charged phosphates. Contrary, a 1.8-linkage exclusiveley leads to a formation of long nanometer thick helical supramolecular polymers (picturee C). These structures tend to form even more complex assemblies (bundles, superhelixes). Moreover, for all samples the polymerization process occurs via a nucleation-elongation mechanism. To study Py3 self-assembly, we carried out whole set of spectroscopic (UV/vis, fluorescence, DLS) and microscopic experiments (AFM).

Item Type:

Conference or Workshop Item (Poster)

Division/Institute:

08 Faculty of Science > Departement of Chemistry and Biochemistry

UniBE Contributor:

Vybornyi, Mykhailo and Häner, Robert

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

Language:

English

Submitter:

Mykhailo Vybornyi

Date Deposited:

02 Oct 2014 14:29

Last Modified:

12 Dec 2014 22:04

BORIS DOI:

10.7892/boris.58922

URI:

https://boris.unibe.ch/id/eprint/58922

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