Synthesis and Self-assembly of Triphenylamine-Fatty Acid Derivatives
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Triphenylamine(TPA) derivatives with alkyl chains in its para position undergo self-assembly by light1 in chlorinated solvents. TPA derivatives show nano-rod type self-assembled structures under light irradiation.2 Moreover, when TPA derivatives are exposed to circularly polarized light (CPL), the self-assembled supramolecules with a helical structure are obtained. In this study, we synthesize TPA derivatives with fatty acid in its para position (TPA-fatty acid) and induce chiral self-assembly by CPL. Oleic acid and linoleic acid are used as fatty acid to make the TPA-fatty acid derivatives. Self-assembly behavior of TPA-fatty acid has been investigated by NMR spectroscopy, Scanning Electron Microscopy (SEM), and Circular Dichroism (CD). 1Nicolas Giuseppone et. al. ACS NANO. 2014, 8, 10111 2Sang Youl Kim et. al. Nature Communication, 2015, 6, 6959