Glaser-Hay-Coupled Random Copolymers Containing Boron Difluoride Formazanate Dyes.

Autor: Cotterill EL; Department of Chemistry, The University of Western Ontario, 1151 Richmond St. N., London, ON, N6A 5B7, Canada., Jaberi Y; Department of Chemistry, The University of Western Ontario, 1151 Richmond St. N., London, ON, N6A 5B7, Canada., Dhindsa JS; Department of Chemistry, The University of Western Ontario, 1151 Richmond St. N., London, ON, N6A 5B7, Canada., Boyle PD; Department of Chemistry, The University of Western Ontario, 1151 Richmond St. N., London, ON, N6A 5B7, Canada., Gilroy JB; Department of Chemistry, The University of Western Ontario, 1151 Richmond St. N., London, ON, N6A 5B7, Canada.
Jazyk: angličtina
Zdroj: Macromolecular rapid communications [Macromol Rapid Commun] 2024 Oct 27, pp. e2400786. Date of Electronic Publication: 2024 Oct 27.
DOI: 10.1002/marc.202400786
Abstrakt: 𝜋-Conjugated polymers, including those based on acetylenic repeating units, are an exciting class of materials that offer narrow optical band gaps and tunable frontier orbital energies that lead to their use in organic electronics. This work expands the knowledge of structure-property relationships of acetylenic polymers through the synthesis and characterization of a series of Glaser-Hay-coupled model compounds and random copolymers comprised of BF 2 formazanate, fluorene, and/or bis(alkoxy)benzene units. The model compounds and copolymers synthesized exhibit redox activity associated with the reversible reduction of the BF 2 formazanate units and the irreversible reduction of the fluorene and bis(alkoxy)benzene units. The copolymers exhibit absorption profiles characteristic or intermediate of their respective models and homopolymers, leading to broad absorption of UV-vis light. The alkyne linkages of the model compounds and copolymers are reacted with [Co 2 (CO) 8 ] to convert the alkyne functional groups into cobalt carbonyl clusters. This transformation leads to blue-shifted absorption profiles due to a decrease in π-conjugation, demonstrating the ability to tune the properties of these materials through post-polymerization functionalization. The redox activity and broad absorption bands of the polymers reported make them excellent candidates for use in photovoltaics and other light-harvesting applications.
(© 2024 The Author(s). Macromolecular Rapid Communications published by Wiley‐VCH GmbH.)
Databáze: MEDLINE
Externí odkaz: