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. 2020 Oct 19;8:584060. doi: 10.3389/fchem.2020.584060

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Copyright © 2020 Cullen, Heintz, O'Reilly, Long, Heise, Murphy, Karlsson, Gibson, Greetham, Towrie and Pryce.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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TRIR spectra following excitation at 525 nm of the polymer in CD₃CN (left) in the fingerprint region (A). TRIR spectra following excitation at 525 nm of the polymer dissolved in chloroform the triple bond region (B). Blue spectra indicating initial time delays (ps), red spectra indicated final time delays (ps).