Supramolecular polymerization: Challenges and advantages of various methods on assessing the aggregation mechanism

Авторы: Vill Roman, Gülcher Jochen, Khalatur Pavel G., Wintergerst Pascal, Stoll Andreas, Mourran Ahmed, Ziener Ulrich
Журнал: Nanoscale
Год издания: 2018
Издательство: RSC Pub.
Местоположение издательства: Cambridge, England
DOI: 10.1039/c8nr08472f
Аннотация: 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), experi-mental data delivered conﬂicting results and the concentration should not therefore be exceeded. Scanning force microscopy and molecular dynamics simulations conﬁrm the formation of one-dimen-sional aggregates with presumably helical arrangement of the achiral monomers.
Добавил в систему: Халатур Павел Геннадьевич

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