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Issue 2, 2019
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Supramolecular polymerization: challenges and advantages of various methods in assessing the aggregation mechanism

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Abstract

Oligothiophenes with branched alkyl end groups show distinct aggregation in organic solvents. The process of supramolecular polymerization is assessed by three different methods (UV-vis absorption and fluorescence emission spectroscopy and dynamic light scattering) to exclude artifacts. An apparent dependence of the degree of aggregation on the concentration of the oligomers is observed. Above the upper limit of concentration (a lower micromolar range for the present class of compounds), experimental data delivered conflicting results and the concentration should not therefore be exceeded. Scanning force microscopy and molecular dynamics simulations confirm the formation of one-dimensional aggregates with presumably helical arrangement of the achiral monomers.

Graphical abstract: Supramolecular polymerization: challenges and advantages of various methods in assessing the aggregation mechanism

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Publication details

The article was received on 19 Oct 2018, accepted on 30 Nov 2018 and first published on 03 Dec 2018


Article type: Paper
DOI: 10.1039/C8NR08472F
Citation: Nanoscale, 2019,11, 663-674

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    Supramolecular polymerization: challenges and advantages of various methods in assessing the aggregation mechanism

    R. Vill, J. Gülcher, P. Khalatur, P. Wintergerst, A. Stoll, A. Mourran and U. Ziener, Nanoscale, 2019, 11, 663
    DOI: 10.1039/C8NR08472F

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