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W. Michael Kochemba, S. Michael Kilbey II and Deanna L. Pickel End-group composition of poly(3-hexylthiophene)s prepared by in situ quenching of the grignard metathesis polymerization: Influence of additives and reaction conditions Journal of Polymer Science Part A: Polymer Chemistry 50

Version of Record online: 4 APR 2012 | DOI: 10.1002/pola.26057

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The influence of additives and reaction conditions on the end-group composition of poly(3-hexylthiophene)s (P3HTs) prepared by in situ quenching of the GRIM polymerization with a Grignard reagent is investigated. Additives such as styrene and 1-pentene are shown to alter the end-group composition of tolyl-functionalized P3HTs as determined by matrix assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), and temperature and LiCl also play important roles. Monofunctional P3HT is the major product (72% abundance) when the functionalization is performed in the presence of LiCl and styrene at 0 °C, whereas in the absence of additives the monofunctional product is present only at 11% abundance.

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