Self-Assembly of Folded m-Phenylene Ethynylene Oligomers into Helical Columns
Journal of the American Chemical Society2001Vol. 123(33), pp. 7978–7984
Citations Over TimeTop 1% of 2001 papers
Abstract
Circular dichroism spectroscopy has been used to study the self-assembly of two series of m-phenylene ethynylene oligomers in highly polar solvents. The helical conformation of shorter oligomer lengths was found to be stabilized in aqueous acetonitrile solutions, while longer oligomers began to interact intermolecularly. The intermolecular aggregation of the oligomers in aqueous solutions revealed a chain length dependent association that required the presence of a stable helical conformation. Evidence for intermolecular interactions is provided by Sergeants and Soldiers experiments in which the twist sense bias of a chiral oligomer is transferred to an achiral oligomer.
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