Controlled Synthesis of an Alternating Donor-Acceptor Conjugated Polymer via Kumada Catalyst-Transfer Polycondensation

Alexander D. Todd; Christopher W. Bielawski

doi:10.1021/acsmacrolett.5b00505

Controlled Synthesis of an Alternating Donor-Acceptor Conjugated Polymer via Kumada Catalyst-Transfer Polycondensation

Alexander D. Todd, Christopher W. Bielawski

Chemistry (Twin Cities)

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38 Scopus citations

Abstract

Kumada catalyst-transfer polycondensation was used to synthesize poly(5,6-difluorobenzotriazole-alt-4-hexylthiophene) (PFBTzHT), an alternating donor-acceptor conjugated polymer, in a controlled manner. Through a series of kinetic studies, a linear relationship between the monomer conversion and the molecular weight of the resulting polymer was observed while maintaining narrow polydispersities (Ds ≤ 1.4). Moreover, the M_n displayed a linear relationship with the initial monomer-to-catalyst feed ratio, and polymers with M_ns up to 25 kDa were successfully synthesized. All-conjugated block copolymers containing segments of PFBTzHT and poly(3-hexylthiophene) (P3HT) were also obtained in various compositions (30-70% P3HT) via sequential monomer addition in a single vessel.

Original language	English (US)
Pages (from-to)	1254-1258
Number of pages	5
Journal	ACS Macro Letters
Volume	4
Issue number	11
DOIs	https://doi.org/10.1021/acsmacrolett.5b00505
State	Published - Oct 27 2015

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© 2015 American Chemical Society.

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Controlled Synthesis of an Alternating Donor-Acceptor Conjugated Polymer via Kumada Catalyst-Transfer Polycondensation

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