ChemRxiv
These are preliminary reports that have not been peer-reviewed. They should not be regarded as conclusive, guide clinical practice/health-related behavior, or be reported in news media as established information. For more information, please see our FAQs.
1/1
0/0

Stereoretentive Ring-Opening Metathesis Polymerization to Access All-cis Poly(p-phenylene vinylene)s with Living Characteristics

preprint
submitted on 11.05.2020 and posted on 13.05.2020 by Ting-Wei Hsu, Cheoljae Kim, Quentin Michaudel
Poly(p-phenylene vinylene)s (PPVs), a staple of the conductive polymer family, consist of alternating alkene and phenyl groups in conjugation. The physical properties of this organic material are intimately linked to the cis/trans configuration of the alkene groups. While many synthetic methods afford PPVs with alltrans stereochemistry, very few deliver the all-cis congeners. We report herein the first synthesis of all-cis PPVs with living characteristics via stereoretentive ring-opening metathesis polymerization (ROMP). Exquisite catalyst control allows for the preparation of homopolymers or diblock copolymers with perfect stereoselectivity, narrow dispersities, and predictable molecular weights. All-cis PPVs can then serve as light-responsive polymers through clean photoisomerization of the stilbenoid units.

Funding

Petroleum Research Fund (the American Chemical Society)

History

Email Address of Submitting Author

quentin.michaudel@chem.tamu.edu

Institution

Texas A&M University

Country

USA

ORCID For Submitting Author

0000-0002-1791-9174

Declaration of Conflict of Interest

No conflict of interest.

Exports