Macrocyclic poly(p-phenylenevinylene)s by ring expansion metathesis polymerisation and their characterisation by single-molecule spectroscopy

Benjamin John Lidster; Shuzo Hirata; Shoki Matsuda; Takuya Yamamoto; Venukrishnan Komanduri; Dharam Raj Kumar; Yasuyuki Tezuka; Martin Vacha; Michael L. Turner

doi:10.1039/C7SC03945J

Macrocyclic poly(p-phenylenevinylene)s by ring expansion metathesis polymerisation and their characterisation by single-molecule spectroscopy†

Benjamin John Lidster,^a Shuzo Hirata,

^b Shoki Matsuda,^b Takuya Yamamoto,

^c Venukrishnan Komanduri,

^a Dharam Raj Kumar,^a Yasuyuki Tezuka,

^b Martin Vacha

*^b and Michael L. Turner

*^a

Author affiliations

* Corresponding authors

^a The School of Chemistry, The University of Manchester, Oxford Road, Manchester, UK
E-mail: michael.turner@manchester.ac.uk

^b Department of Materials Science and Engineering, Tokyo Institute of Technology, Ookayama 2-12-1, Meguro-ku, Tokyo 152-8552, Japan
E-mail: vacha.m.aa@m.titech.ac.jp

^c Division of Applied Chemistry, Faculty of Engineering, Hokkaido University, Sapporo, Hokkaido, Japan

Abstract

Ring expansion metathesis polymerisation (REMP) has proven to be a viable approach to prepare high purity cyclic polymers. Macrocyclic polymers with a fully conjugated defect free backbone are of particular interest as these polymers have no end groups that can act as charge traps. In this work soluble macrocyclic poly(p-phenylenevinylene)s (cPPVs) have been prepared directly via the REMP of substituted paracyclophanedienes. Single-molecule spectroscopy of the two topological forms of PPV i.e., linear (lPPV) and cyclic (cPPV) revealed that lPPV exists in an extended conformation whereas the cPPV adopts a restricted ring-like conformation. Despite such large differences in the chain conformation, the spectral properties of the two compounds are unexpectedly very similar, and are dominated by torsional deformations in relatively short conjugated segments.

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DOI: https://doi.org/10.1039/C7SC03945J
Article type: Edge Article
Submitted: 08 Sep 2017
Accepted: 12 Feb 2018
First published: 13 Feb 2018
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry

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Chem. Sci., 2018,9, 2934-2941

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Macrocyclic poly(p-phenylenevinylene)s by ring expansion metathesis polymerisation and their characterisation by single-molecule spectroscopy

B. J. Lidster, S. Hirata, S. Matsuda, T. Yamamoto, V. Komanduri, D. R. Kumar, Y. Tezuka, M. Vacha and M. L. Turner, Chem. Sci., 2018, 9, 2934 DOI: 10.1039/C7SC03945J

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Chemical Science

Macrocyclic poly(p-phenylenevinylene)s by ring expansion metathesis polymerisation and their characterisation by single-molecule spectroscopy†

Abstract

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Macrocyclic poly(p-phenylenevinylene)s by ring expansion metathesis polymerisation and their characterisation by single-molecule spectroscopy

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