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Issue 16, 2013
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Hierarchically self-assembled helical aromatic conjugated polymers

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Abstract

We review recent progress in hierarchically self-assembled helical aromatic π-conjugated polymers (ACPs) by focusing on (i) the intrachain helicity of ACPs in which the main chain forms a helicene-like helical conformation and (ii) the interchain helicity of ACPs in which the main chains are helically π-stacked with one another. In Part 1, intrachain helical poly(meta-phenylene ethynylene) derivatives are discussed in terms of thermodynamic stability, usage of a chiral template, and feasibility of chiral recognition. Intrachain helical poly(meta-phenylene) derivatives are discussed from viewpoints of hierarchically self-assembled whiskers, magnetically forced macroscopic alignment, and chemical modification producing poly(thiaheterohelicene)s with stiff intrachain helicity. In Part 2, both polythiophene derivatives and poly(para-phenylene vinylene) derivatives are discussed in terms of interchain helicity and the effect of chiral organisation on chiroptical properties. Subsequently, thienylene-based diblock copolymers are discussed in terms of formation of hierarchical superhelices. Finally, thienylene- and phenylene-based homopolymers and copolymers are discussed in terms of an interchain helically π-stacked structure; reversible photoswitching of circularly polarised luminescence; and the evolution of RGB- and white-coloured, circularly polarised luminescence.

Graphical abstract: Hierarchically self-assembled helical aromatic conjugated polymers

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Publication details

The article was received on 07 Jan 2013, accepted on 05 Feb 2013 and first published on 05 Feb 2013


Article type: Feature Article
DOI: 10.1039/C3TC00045A
Citation: J. Mater. Chem. C, 2013,1, 2797-2805
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    Hierarchically self-assembled helical aromatic conjugated polymers

    K. Watanabe, K. Suda and K. Akagi, J. Mater. Chem. C, 2013, 1, 2797
    DOI: 10.1039/C3TC00045A

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