Issue 20, 2019

Expression of chirality amplification in self-assembled achiral/chiral polyfluorene blends

Abstract

In this contribution, we report the chiroptical and morphological properties of three polyfluorenes, two chiral with different pendant groups and one achiral. Blends were prepared using different chiral/achiral ratios, and the chiroptical and morphological properties of thin films were determined, using circular dichroism spectroscopy (CD) and atomic force microscopy (AFM), respectively. The AFM height images showed the formation of self-assembled structures, associated with the achiral fraction, which was organized by the chiral component. The sergeants and soldiers principle in pristine and annealed thin films was evidenced. The morphological results are supported by chiroptic measurements. The self-assembled morphologies encompassed higher order hierarchical structures, such as helical rods and disks.

Graphical abstract: Expression of chirality amplification in self-assembled achiral/chiral polyfluorene blends

Supplementary files

Article information

Article type
Paper
Submitted
20 feb. 2019
Accepted
20 apr. 2019
First published
23 apr. 2019

J. Mater. Chem. C, 2019,7, 6161-6168

Expression of chirality amplification in self-assembled achiral/chiral polyfluorene blends

C. Zanlorenzi, B. Nowacki and L. Akcelrud, J. Mater. Chem. C, 2019, 7, 6161 DOI: 10.1039/C9TC00990F

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